COUNTERSINK DRILL BIT SET – Also Countersink For Woodworking – Included 5 Pieces all same size #6 Cutters (for up to 3/8″ or 10mm screws head), 2 extra Tapered High Speed Steel M2 Drill Bit (6542 grade), 1 Stop Collar, 1 Hex Wrench and 1 Safe Container to keep your set safe and always handy
ADJUSTABLE COUNTERSINK – Also Countersink Bits For Wood – The Adjustable Stop Collar allows you to adjust the Counterbores depth and Adjustable Cutters can be adjusted for many screws sizes.
QUICK CHANGE SHANK – The Quick Change 1/4″ Shank is Universal size, Compatible with all 1/4″ Quick Change Chucks, Juego De Brocas Avellanadoras Para Madera, Avellanadores Para Madera, Juego De Brocas Para Avellanar, Broca De Avellanado.
QUALITY VALUE SET – Our Countersink Drill is manufactured in China which allow us to have a competitive price, but the JNB Pro Requirements as the High Speed Steel M2 (6542 grade) Drill Bit and Carbon Steel #45 Cutters make the product have better or same quality as USA made. If for any reason your are not satisfied with the product you are invited to return or have product replaced. Your satisfaction is our goal. Broca Avellanadora Para Mader
Specifications for this item
|Brand Name||JNB Pro|
|Cutting Diameter||3/8 inches|
|Included Components||5 Countersink Drill Bits #6 (3/8″), 02 extra tapered drill bit, 01 Stop Collar, 1Hex Wrench & 1 Safe Container|
|Item Weight||5.3 ounces|
|Material||High Speed Steel M2 (6542 grade), Carbon Steel #45|
|Size||#6 (3/8 cutters), 9/64 (Tapered Pilot Drill Bit)|
|Specific Uses For Product||Wood Countersink and Counterbore|
Jaime D. –
Soy de Perú y las herramientas llegaron en perfecto estado y en el tiempo previsto.
JORGE HAI –
The countersink bits are very good, came with 2 extra tapered drill bit, which is awesome, and I liked the plastic tube, handy.
Rodrigo carvalho Ribeiro –
Much better quality then I expected. Will buy it again for sure.
Karl A Perry –
This is the same review as I posted for the #8 set. Features and value are exactly the same.This came with 7 (!) bits and five countersink sleeves, plus a stop collar and hex key.NOTE: I got both a #6 and a #8 kit. The picture is from the #6 kit, but since both kits are identical they are equally illustrative.They also came with a stop collar that makes it easy to set the countersink cone depth to exactly what you want.PROS- Tapered bits allow a pilot hole to be drilled into the receiving piece as well as a guide hole in the top piece, plus the countersink. For really hard woods such as maple this drills a nice pilot that helps keep the receiving piece from splitting.- Infinitely adjustable. You can control the depth of the pilot hole and of the countersink cone. Really nice, especially for me where I tend to drive counterbores too deep and I’m constantly concerned that I’ll drive the screw through to visibility on the outside of my piece. See the picture for detail.- Sharp, and drill quickly. They gobble wood for breakfast.- Two set screws on the countersink sleeves. This makes for very secure depth setting. See the picture for detail.- Nice little case that is easy to open and stores everything for next time.CONSI haven’t found any yet.For a hobbyist woodworker, this is a strong Recommend.
very good product I used I am buying more for my employees
Ron Killian –
I am really into woodworking, so I can always use sets like this. Everything you need comes in the container, even a hex wrench to tighten up the countersink part. Tried one on a 2X4 and it drilled a nice hole with a quite good countersink. These are going to do the job very well. Plus the container is great for storage and organization.Very happy with the set, it’s a good price and would happily recommend.
Amazon Customer –
decent price. quick shipping
The quality of this set is excellent and you get a lot for your money with seven drill bits and five countersinks. With the stop collar and hex wrench in the durable case, you have all you need to drill a large number of ready to use countersunk holes. If you drill deeper, the screw holes can be plugged with doweling because the countersink becomes a counterbore once it reaches a diameter somewhat larger than the screw head. The countersink and depth-stop parts attach to a regular cylindrical 9/64″ drill bit for added flexibility.The tapered drill, which is the heart of the system, is permanently affixed to a 1/4″ hex drive shank which can be very securely held in a drill chuck (no spinning and galling the shaft) or held in a quick-release hex-drive of a cordless impact driver. This is excellent flexibility; there is no compromise in tool-holding for either of the driver types you’re likely to use.The only downside is the compromise inherent in a tapered-drill tool. The advantage of a tapered drill is you drill the one hole, through both the held and holding material, and you’re all set to drive your fastener. The disadvantage is that the hole is smaller than optimal in some spots and larger than optimal in others. In general, you’re going to have less holding power. The extent of the compromise depends on how careful you are in setting the depth and the material you are fastening.An optimal screw hole in wood has two diameters. The held wood (screw-head side) should have a hole that allows the screw to pass through without engaging the threads. This ensures the screw head pulls the held member tightly to the holding surface. The holding wood should have a hole the size of the “root” of the screw thread, rounding to the nearest lower 1/64″ if between 64ths (and depending on the hardness and brittleness of the wood). This allows the threads to engage the holding wood completely, but the screw root is not wedging the wood apart and encouraging a split.To do this well takes two holes of different diameters, which means drilling two holes, which means swapping bits or two separate drills, or whatever way you decide to do it. This is the extra effort the tapered drill eliminates. The cost of this convenience is that you either have lower thread engagement or the root of the screw is driven into wood without benefit of a hole for part of its length.So you have to decide. If the screw drives in easily, you may not have enough thread engagement. If you get splitting or the held wood doesn’t seat against the holding wood you may have too much. A compromise setting that gets the job done is probably possible in most situations, especially when working with soft woods such as construction lumber. If it’s critical, maybe it’s better to use two regular cylindrical bits. The countersink part can be attached to a regular drill bit if you decide to go that way.
Joao De Souza –
I’ve been working with the bits on cabinets installation for 2 weeks, none broken so far and still cutting as the first day. I’m very satisfied, good bits and good price.
David Rocks –
I received this product in exchange for my honest review as part of the Amazon Vine Program. Seller JNB Pro lists these as “JNB Pro Wood Countersink Drill Bit Set – 5 Pc Adjustable Countersink Bit #6(9/64″) – All Same Size – 2 Extra 9/64 Tapered Drill Bit, 1 Adjust. Collar, 1 Wrench – 1/4″ Quick Change Shank – Countersink”. Whenever I do woodwork I like to make a hole with a countersunk head to fit the wood screw I am using. This is a pro quality set of 5 drill bits which have a special taper specifically for #6 wood screws. The countersink cutter can be adjusted on the drill bit to let me drill for different screw lengths, and there is a collar I can use to limit depth if I want.I appreciate that this set has 2 extra tapered drill bits and the hex wrench to fit the countersinks and collar. These are also 1/4 inch Hex shanked so fit any drill driver power tool. Picture 1 shows the set out of the handy reusable tube holder. Picture 2 shows a nicely countersunk hole I drilled in a 2×4 end. I drove an old flat head wood screw 1 1/2 inches in without head stripping trouble because the tapered hole was exactly right. They don’t hardly make long flat head drive screws anymore because with Phillips, Torx and square drive screws that drive easily it is no wonder! This bit set is ideal for whenever I want to do holes that are properly countersunk for #6 bugle head wood screws. For repetitive holes this is excellent and makes driving in the screw properly very easy for me.I Recommend this JNB Pro Wood Countersink Drill Bit Set. The hole size is limited but a useful one and these are properly made, drill wood well and countersink for #6 wood screws perfect.