The sets are designed to drill countersink holes for common screw sizes. If you disagree with any part of these terms and conditions, please do not use our website. Its so easy that my 10-year-old was able to pick it up in a few minutes. Learn how your comment data is processed. Olson All Pro Band Saw Blades-93-1/2" (fits most 14" Delta Jet etc. 1-800-752-0725. We believe you have a right to know about what information organisations have about you. Green Solid and Striped Border 2 ft. 7 in. He and I had a blast countersinking screws together the other day. This space reduces the outward force. Indoor/Outdoor Runner Rug, SAFAVIEH Antiquity Dark Blue/Multi 9 ft. x 12 ft. Border Area Rug, BEHR ULTRA 5 gal. For international returns, please click here. excellent little bit of kit at a great price, saves a lot of time on jobs. Items shipped directly from the manufacturer cannot be returned in store. Before disclosing your personal information on any other website, we advise you to examine the Terms and Conditions of those websites. Combination bits are usually sold in sets. It is subject to change without notice. DeWalt Pilot Drill Bit & Countersink 8 x 75mm (4546V). Your use of any information or materials on this website is entirely at your own risk, for which we shall not be liable. When the glue is dry, a flush cut saw is used to trim the plug and then the plug is sanded flush. Driving a screw flush without using a countersink bit crushes the wood fibers. The term you refers to the user or viewer of our website. Copyright Screwfix Direct Ltd 2022 Company Registration no: 3006378 VAT Registered: 232555575. For the best experience on our site, be sure to turn on Javascript in your browser. You acknowledge that such information and materials may contain inaccuracies or errors and we expressly exclude liability for any such inaccuracies or errors to the fullest extent permitted by law.
), Use for wood screws with the traditional thicker shank, 1/4'' hex shank for easy change-out with driver bits, Durable black oxide coating on countersinks, Pilot bits and countersinks are separable, High-quality brands and products you can trust, Expert advice and free post-purchase support, Exclusive, innovative products that help you Create with Confidence, Detailed instructions, technical specs and guides to make the most of your purchases.
When drilling a screw into softwoods, like pine boards, you can indeed get the screw to go below the surface, but it typically chews up the wood at its entry point, leaving you with a rough finish. All rights reserved. The MILWAUKEE SHOCKWAVE 3PC Countersink Bit Set features #6, #8 and #10 Countersinks. If youre ready to give your wood projects a bit of extra polish, heres how to countersink a screw. Snappy has set the standard for countersink bits! The content of the pages of this website is for your general information and use only. 1) An Australian Visa or Mastercard debit/credit card; 2) To be over 18 years of age; 3) To live in Australia, To see Afterpay's complete terms, visit https://www.afterpay.com.au/terms, Makita #8 Drill & Countersink Bit A-99683. There is no cost to you for using these links. All feature 1/4" shanks for use in any standard chuck! This product is a must for anyone wanting a great finished pilot hole. You may also return purchases to a Rockler store near you for store credit. #M500-7 Very Navy Satin Enamel Exterior Paint & Primer. You may not need a countersink drill bit, but there are a few reasons why you may want to use one. Spot publicitaires, documentaires, films, programmes tl et diffusion internet, Cours de franais/anglais des fins professionnels, prparation aux examens du TOEFL, TOEIC et IELTS, Relve de la garde royale Buckingham Palace, innovation technologique et apprentissage rapide. You use an Allen wrench to do this. The term tools.com or us or we refers to the owner of the website whose registered office is 134 Wellingon Pde, East Melbourne. Choose one that matches the size of the screw head. Note: Specifications are approximate and subject to change. No more vacant rooftops and lifeless lounges not here in Capitol Hill. - your top level domain name (for example .com, .gov, .au, .uk etc) When you look at the tools.com website, we may record the following information for statistical purposes: We believe you have a right to know about what information organisations have about you. If its just below the surface, you can make the finished job look even prettier by filling the countersink divot with some wood putty and then painting over it. Thanks, both parts will be larger as it goes to no10, DeWalt Pilot Drill Bit & Countersink 8 x 75mm. All made in the U.S.A.! bvseo-msg: BV SEO Content for this product did not include verbose reviews.. x 9 ft. 10 in. This website contains material which is owned by or licensed to us. The second way is to drill the hole even deeper so that a wooden plug can be inserted into the hole. These links are provided for your convenience to provide further information.
They do not signify that we endorse the website(s). Don't get scammed by websites pretending to be Harbor Freight. Choose a combination bit that corresponds to the size of the screw. Just think of us as this new building thats been here forever. This method furnished a surprisingly clean-looking hole. Welcome to tools.com, If you continue to browse and use this website, you are agreeing to comply with and be bound by the following terms and conditions of use, which together with our privacy policy govern tools.coms relationship with you in relation to this website. (1) #6 Wood Screw Countersink/Pilot Hole Drill Bit. Pay fortnightly, enjoy your purchase straight away! Use a pencil and Kreg Multi-Mark to mark the location for the hole. Gus screwing the screw into his countersink hole. The screw wont be flush with the surrounding wood if the countersink hole is too small. There are several ways you can get your hands on these, We offer bits individually, in a 5 drill bit set or in a 3 drill bit set with an extremely convenient Quick Change Chuck. But we hope you decide to come check us out. Ugly.
The drill bit set includes seven drills, seven countersinks, seven stop-collars and an individually organized wooden storage box for easy transport and organization. Starting at Next, adjust the bit to match the length of the screw. - the previous site you have visited The large gold set screw on the side of each bit ensure a tight bit fit with no slip, allows for easy adjustment of the drill bit protrusion for different screw lengths and easy drill bit replacement (any standard drill bit will work). Note how the black countersink portion of the bit extends along the pilot bit to provide clearance for the shank of the screw. We use cookies to ensure that we give you the best experience on our website. Skip to the beginning of the images gallery, Snappy 5 Piece Drill Bit Adapter Set for Festool Centrotec Chucks. We do not share email or address information with other businesses or organisations. Id really appreciate it! See? Use painters tape to mark the depth of the pilot hole. Powered by. Need Help?
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The Makita #8 Countersink with 11/64" Drill Bit is engineered for drilling pilot hole, countersinks and counterbores for screws. You dont know #Jack yet. If for ANY reason you are not satisfied with this item, you may return it within 90 days for a full refund or replacement. En 10 ans, nous avons su nous imposer en tant que leader dans notre industrie et rpondre aux attentes de nos clients. Then the screw head can be covered with a filler. Use a screwdriver or drill to drive the screw into the countersink hole.
- your ISP address 3pc Set - INCLUDES 1 EACH: Industrial Quick Change Chuck, 7/64" bit with 3/8" counterbore, 1/8" bit with 3/8" counterbore, 9/64" bit with 1/2" counterbore, 1 Hex Key. all in all does what it says on the tin. Drill a shallow divot into your pilot hole so that the screw head can sit just below the surface. Reproduction is prohibited other than in accordance with the copyright notice, which forms part of these terms and conditions. Swap out the bit for a drill bit thats slightly larger than your screw head. 3. This tutorial contains affiliate links to supplies and tools. Weve got the Jackd Fitness Center (we love puns), open 24 hours for whenever you need it. A countersink bit creates an area in the wood that matches the countersunk shape of the screw head. All trademarks reproduced in this website, which are not the property of, or licensed to the operator, are acknowledged on the website. 100% Satisfaction Guarantee! The store will not work correctly in the case when cookies are disabled. Jacks got amenities youll actually use. For California consumers: more information about our privacy practices. For the best experience on our site, be sure to turn on Javascript in your browser. When the countersink bit gets to the wood, slow the drill down a bit so that you dont tear the wood up or go too far down. Thank you for stopping by. The choice is yours! We will only send further information to you in the future if it is explicitly requested. Please can you tell me the difference between no8 and no10 items RYOBI introduces the SpeedLoad+ 5-Piece Power. JavaScript seems to be disabled in your browser. Thank U, Next. Youre welcome. JavaScript seems to be disabled in your browser. Once youve got your countersink drill set, follow these steps: 1. Our ABN is 98 602 925 315. Its not as clean as using a countersink bit, but it will work in a pinch. Single twist design efficiently ejects chips for cleaner holes, Made of smooth drilling, long lasting, heat treated steel. Hex Shank Speedload+ Chuck. When I picked it up from Screwfix the packaging was not exactly 'fresh' so I did wonder if it had been a returned item which had sneakily been used?
2022 Saws on Skates is a registered trademark. And we can sell them for a fraction of the price because we cut out the middleman and pass the savings on to you. Would expect a lot more life out of it for what it cost. This outward force can cause the wood to split. I have to stop drilling at different points for each brand. A countersink bit allows the screws to seat flush with the surrounding wood, but there are also several ways to hide the head of the screw. What happens when you dont countersink a screw. Is the pilot drill bit different size or the countersink part or both For best results and optimized performance, use with DEWALT Flip-Drive system. Such a great tutorial, well written and to the point bravo brother! ), You Dont Have to Be Your Dad: How to Become Your Familys Transitional Character, Podcast #810: How to Turn a Boy Into a Man, A Celebration of the Ideal Bachelor From 1906, Why Ambivalent Relationships Are Terrible for You (And How to Deal With Them), Podcast #808: The Surprising Science Behind Building Stronger Relationships, Podcast #800: The 5 Allies Every Man Needs, Bike Maintenance 101: How to Patch an Inner Tube, How to Sharpen a Pocket Knife: An Illustrated Guide, The Basic Dance Step Every Man Should Know, How to Make a New Hole in a Leather Belt (Using Whatever Tools You've Got), 5 Critical Knife Skills for the Outdoorsman. The Sometimes, Always, Never Three-Button Rule, A Chill Dude Style Staple: The Classic Camp Collar Shirt, How to Wear a Turtleneck (Without Looking Like a Dweeb), A Mans Guide to Fragrance: How to Choose and Wear Cologne, How to Pick the Perfect Mens Wedding Ring, How to Grow a Beard: The One and True Guide, Your No-Nonsense Guide to Choosing the Right Beard Style, Beard Oil FAQs: Answering All Your Pressing Beardly Questions, Beard Grooming 101: The Lowdown on Products and Routine, How to Recognize a Quality Tie in 60 Seconds, Podcast #678: Physical Benchmarks Every Man Should Meet, At Every Age, How to Use Lifting Straps to Level Up Your Strength Training, How to Recognize and Treat Heat Stroke and Heat Exhaustion, What Every Man Should Know About Having a Heart Attack, The Insanely Difficult Standards of Historys Hardest P.E.
If you wish to access a copy of the personal information about you held by tools.com, please contact us atcontact@tools.com. First, we could drill the hole so that the head of the screw sits just below the surface of the wood. If you enjoyed this tutorial, would you please take a moment and pin it to Pinterest? Adjust the countersink drill bit to match the length of your screw. #6/#8/#10 Steel Countersink Set (3-Piece), 3/4 in. . Want more? Choose a drill bit that corresponds to the size of the screw. Extended countersinks provide clearance for thicker, unthreaded screw shanksincludes bits for #6, #8, #10 and #12 wood screws. Hi Pierre Thank you for the compliments. 
I try to stick to one brand so I dont have to think about where to stop , Thank you! We do not collect information about you or your email address without your consent. Then, tighten the screw with the hex wrench and chuck the bit in the drill. Driving a screw creates an outward force on the wood. Content from Saws on Skates may not be reproduced or used in any manner whatsoever without the express written permission of the author.
This takes a bit more time because of the additional swapping you have to do, but it works. This V or recessed area allows a screw with a countersunk head to be driven flush with the face of the workpiece. By just tightening the Rapid Load Holder (sold separately) into your drill or drill/driver, you can quickly insert or eject hex-shank drill bits and screw driving tips as necessary. 2. Related: What is an Awl? Weve got kegerator space; weve got a retractable awning because (its the best kept secret) Seattle actually gets a lot of sun; weve got a mini-fridge to chill that ros; weve got BBQ grills, fire pits, and even Belgian heaters. Get a fast and efficient way to switch from screw driving to hole drilling and back with the DEWALT Steel Countersink Set. A nice-looking countersink by Gus McKay, age 10. These bits are made of alloy steel that is thru hardened for long life and can be re-sharpened. 5pc Set - INCLUDES 1 EACH: 5/64" bit with 3/8" counterbore, 3/32" bit with 3/8" counterbore, 7/64" bit with 3/8" counterbore, 1/8" bit with 3/8" counterbore, 9/64" bit with 1/2" counterbore, 1 Hex Key. This way we can apply a filler like Ready Patch to the head of the screw. Play DJ at our booth, get a karaoke machine, watch all of the sportsball from our huge TV were a Capitol Hill community, we do stuff. The starting point will prevent the drill bit from wandering on the surface of the wood. Each, We proudly stand behind all of our products. Get a fast and efficient way to switch from. Choose a combination bit that matches the size of the screw.
Instead of using a drill bit that both drills the pilot hole and creates a countersink divot, you can opt to make a pilot hole with a regular drill bit and then swap your bit for a countersink drill bit to create the countersink. This material includes, but is not limited to, the design, layout, look, appearance and graphics. 
We have invested millions of dollars in our own test labs and factories, so our tools will go toe-to-toe with the top professional brands. I was very impressed with this bit until it snapped after not a lot of usage. The use of this website is subject to the following terms of use: tools.com is committed to following best practices in protecting your personal privacy. 4 Ways to Make Straight Cuts with a Circular Saw, How to Clean Saw Blades (and Why You Should). Drilling a pilot hole helps to prevent splitting or cracking the wood. From time to time, this website may also include links to other websites. I think this takes a little practice and depends on your countersink bits.
Use of this site is subject to certain Terms Of Use. How to Measure Remaining Sunlight With Your Hands, 11 Auto Maintenance Jobs Every Man Can Do Himself. Your best bet is to get a set of countersink drill bits, but outside of that, youve still got options.
This 4-Piece Set includes bits for #6, #8, #10 and #12 wood screws. The V shape created by the countersink bit allows the screw to be driven flush with the face of the wood. Strongsville, OH 44149 2000-2022 Home Depot. Occasionally the pilot bit wobbles but usually easily fixed by loosening the grub screws, twisting the bit and retightening. We can drill a countersink hole so that the head of the screw seats flush with the surrounding wood. It shall be your own responsibility to ensure that any products, services or information available through this website meet your specific requirements. Crushing the wood fibers causes the surface of the wood to tearout which makes our projects look unprofessional. Copyright 2022 TransProfessionals. Only annoyance is the bit is not a standard size so if you snap it you will probably need to buy again and although theyre not expensive the cost is enough for it to be an irritation. divers domaines de spcialisations. In this easy-to-follow tutorial, well look at how to use a countersink bit, what size bit you need, and how to drive countersink screws in wood. We do not use cookies to collect information about how you use our site. Thank you for the compliments. Makita Makpac Connector Case 3 Insert - Suits Dril, Makita Makpac Connector Case 3 - Insert for DGA504, Makita 3 Piece Drill & Countersink Bit Set A-99661, Makita #8 Replacement Drill Bit & Shaft A-99720, Makita 225mm 18tpi Reciprocating Blade Bi-Metal (5, Makita Mag Boost - Magnetic Screwdriving Adaptor B, Makita 5/8" TIN-HSS Countersink Bit 5 Edges 1/4" S, Makita 3/4" HSS Countersink Bit 5 Edges 1/4" Shank, Bordo 7/64" Cobalt Drill with TCT Countersink 2202, Alpha 25.0mm (M12) VersaDrive 90 Countersink, Holemaker Cross Hole Countersink 90 20 - 25mm, Copyright 2022 TOOLS.COM PTY LTD We accept Comprehensive Reusable Tenant Screening Reports, however, applicant approval is subject to Thrives screening criteria |. Is there a trick for insuring the proper depth of the countersink: not too deep vs deep enough for regularity ? 
Unless required to do otherwise by law, we only collect your information in order to provide you with the information and services which you request. Countersinking your pilot hole prevents that chewed-up look from happening. - the pages you accessed and documents downloaded Visit my site policies for more information. The bit plus countersink provide fast, durable drilling performance allowing woodworkers to create professional looking results in soft and hard woods. It wont even look like you have a screw there. Custom Doors, Drawers & Glass Accessories, 4-Piece Wood Screw Countersink/Pilot Hole Drill Bit Set, Skip to the beginning of the images gallery. Brett and Kate McKay April 15, 2021 Last updated: June 1, 2021. Glue is applied to the plug and the plug is inserted into the hole. Manufacturer guarantees/warranties for power tools, CNC and laser products will supersede the Rockler Guarantee if these items are damaged or defective. Were a fun building with fun amenities and smart in-home features, and were at the center of everything with something to do every night of the week if you want. Related: 7 Tips for Using a Pocket Hole Jig with Hardwoods. Make 4 payments of $2.60 over 8 weeks and get it now! These bits not only drill the proper size pilot hole for the screw but will countersink (82 degree) for the screw head and counterbore (3/8 or 1/2" diameter) for the plug! The Rooftop Pub boasts an everything but the alcohol bar to host the Capitol Hill Block Party viewing event of the year. Improvised countersink. Countersinking involves enlarging the rim of a pilot hole so that the head of the screw sits flush or just below the woods surface. Another consideration is the hardness of the wood.
For Professional Results, demand DEWALT Accessories. The Art of Manliness participates in affiliate marketing programs, which means we get paid commissions on editorially chosen products purchased through our links. First, a pilot hole is drilled into the workpiece. Or drill the hole deep enough to hide the screw head with a filler or a wood plug. Neither we nor any third parties provide any warranty or guarantee as to the accuracy, timeliness, performance, completeness or suitability of the information and materials found or offered on this website for any particular purpose. Plus, it makes DIY projects look more professional. Stay informed on new OneTIME Tools and more! The right size bit is one where you can just see the threads of the screw on either side of the bit. 2. If you have any particular, unusual or sensitive enquiries with regard to privacy matters, email our Privacy Officer atcontact@tools.com, Simple instalment plans available instantly at checkout. Switch the drill bit for a screw bit and screw in your screw. Related: How to Put a Drill Bit in a Drill. Im glad it was helpful for you. We only recommend products we genuinely like, and purchases made through our links support our mission and the free content we publish here on AoM. $25.99 Learn how to use a countersink bit with this step-by-step tutorial. When you browse our website, you do so anonymously. This method works well if the project will be painted, but not so much if the project will be stained. We will not disclose your personal information to any individual, company or organisation (except as required by law). Store-bought button plugs are available or we can use a plug cutter to cut our own plugs. If you continue to use this site we will assume that you are happy with it. The 1/8" Hex drill bit length is adjustable to allow for precise depth control. Our Wood Screw Countersink Drill Bits are shaped specifically for traditional wood screws with a tapered head, thicker shank and narrower thread. Screw sizes are printed on the screw containers. Or the bit can be drilled even deeper to create an area for a plug. Choose a fluted bit that corresponds to the size of the screw head. It just needs to be close to the length of the screw. We are proud of the quality of our products, and we stand behind them 100%. Want to make your next DIY wood project look a bit sharper and more professional? Nous sommes une compagnie de traduction spcialise dans la gestion de grands projets multilingues. If you did everything right, your screw head will sit flush with the woods surface or just below the surface. Local store prices may vary from those displayed. If for any reason you are not satisfied with the merchandise you ordered, just return it within 90 days to receive a refund in the manner of original payment for merchandise only. DeWalt Pilot Drill Bit & Countersink 8 x 75mm Reviews - page 2, loc_en_GB, sid_4546V, prod, sort_[SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)], loc_en_GB, sid_4546V, prod, sort_[SortEntry(order=LOCALE, direction=DESCENDING), SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]. Purchases made using these links help support the Saws on Skates website and allows me to share more projects and tips with you. Help other tools.com users shop smarter by writing reviews for products you have purchased. " hex shank. Use this set with the RYOBI 1/4 in. This shape allows the screw to contact the wood with an equal amount of force. The easiest way to countersink a screw is to buy a drill bit that drills a pilot hole and creates the countersink divot at the same time. Drill the hole deep enough to make the screw head flush with the surface of the wood. What the hole looks like using the Phillips head bit. Another improvised way to countersink a screw is to drill your pilot hole with your regular drill bit and then use a Phillips head bit to hollow out a countersink divot to a depth where the screw head can lie flat. There will be space between the screw head and the edge of the hole if the countersink is too big. I have countersink bits from a few different brands. Switch the drill bit for a screw bit and screw in your screw. Drill your pilot hole with the appropriate-sized drill bit. Get 10% Off Your Entire Purchase When You Open a New Account, Get our best deals and latest news delivered straight to you. The depth of the pilot hole doesnt need to be drilled to the exact length of the screw. The drill bit can be adjusted the desired drilling depth, and the 1/4" hex shank fits in impact drivers and driver-drills. Read the full disclosure here.
Then, a wood plug can be inserted into the hole to hide the screw and give the project a finished look. How to countersink a screw. Great bit of know-how to impart on a rainy afternoon. Chuck the bit in the drill and drill the hole until the painters tape contacts the face of the workpiece. Or we can drill the countersink hole deeper so that we can hide the head of the screw. For any difficulty using this site with a screen reader or because of a disability, please contact us at 1-800-444-3353 or cs@harborfreight.com. Using a Phillips head bit to create a countersink. We have no responsibility for the content of the linked website(s). des professionnels de la langue votre service, Cest la rentre TransProfessionals, rejoignez-nous ds prsent et dbuter les cours de langue anglaise et franaise, + de 3000 traducteurs, + de 100 combinaisons linguistiques, For these items, please call the store where you purchased them or our customer service department at 1-800-376-7856 so we can assist you. The pre-drill and countersink bits are designed for use in Milwaukee Drill Drivers. Saws on Skates is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. The 1/4" Quick Change Hex Shanks allow for quick size changes. This Contractor Grade countersink and drill bit is ideal for woodworking projects to provide a professional finish. Using a countersink drill bit prevents tearout, reduces the chances of splitting the wood, and allows screws to make better contact. Related: 7 Ways to Prevent Pocket Screws from Splitting Wood. A countersink drill bit does two things. Countersinking is really dang easy, especially if you have the right tools for the job. Been meaning to buy one for a while and got one when I needed to build a frame for a baseboard. Well look at what it does, why you need one, and what size countersink bit you need. Drilling a pilot hole creates a space for the screw. Heres how: 1. This set works with all 3/8 and 1/2 in. Works a treat for me and speeded up construction no end. Or drill the hole deep enough to hide the screw head with a filler or a wood plug. Want to start taking action on the content you read on AoM? This allows you to enjoy the increased strength of screws with a thicker shank without compromising the grip of the threads. For Professional Results, demand DEWALT Accessories. Program, Strengthen Your Tribe: A Report on the Atomic Athlete Vanguard, Sunday Firesides: We Need to Make Adulthood More Desirable, The Best Riddles for Kids (With Answers! Drill bits and countersinks for smoother drilling. Select the drill bit that matches up with the size of your screw. Pilot drill and countersink in one to hide screws in wood and timber. tools.com provides links to websites outside of this site. Then, drill the hole deep enough to make the screw head flush with the surface of the wood. The Power Groove Countersink Set (5-Piece) includes four countersinks and a hex wrench for changing or tightening the drill bit in each countersink. Your use of this website and any dispute arising out of such use of the website is subject to the laws of Australia. We might be able to drive a screw flush without using a countersink bit on softwoods (keep in mind this would cause tearout). The tapered drill bits and countersinks in this set have a unique, single twist design that efficiently ejects chips, resulting in cleaner holes. The most important thing to remember when using a countersink bit is to match the size of the bit to the size of the screw. - the type of browser you are using. 7 Tips for Using a Pocket Hole Jig with Hardwoods, 7 Ways to Prevent Pocket Screws from Splitting Wood, It takes a little practice to drill the hole deep enough so the screw head will be flush with the surrounding surface, Try drilling countersink holes on a few test pieces before drilling holes on your project, Drilling too fast can make the countersink holes too deep, Drilling at a high speed can cause chatter, Chatter is where the edges of the hole tearout and the inside of the hole is jagged. If you wish to access a copy of the personal information about you held by tools.com, please contact us at, If you have any particular, unusual or sensitive enquiries with regard to privacy matters, email our Privacy Officer at, Drills pilot holes, countersinks and counterbores for #8 screws in one easy operation for a flush finish in wood, Drill bit can be adjusted to the desired drilling depth, 1/4" hex shank fits in impact drivers and driver-drills, Creates pilot hole for screw to prevent wood from splitting, Produces clean finishes in hard and soft wood, Tapered drill bit for superior speed and ideal hole, Four-Cutter countersink design produces clean finish, Set screw design for easy drill bit replacement.