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IRWIN High Speed Steel Countersinks feature a precision-ground 82-degree tip that makes them ideal for countersinking into most machinable metals. They're made from industrial grade high speed steel for increased durability and they include a black oxide finish for added corrosion resistance. The five flute design reduces vibration for smoother drilling and extended life. Plus, the 1/4" round shank fits all handheld and stationary drills.
From the Manufacturer
IRWIN High Speed Steel Countersinks feature a precision-ground 82-degree tip that makes them ideal for countersinking into most machinable metals. They're made from industrial grade high speed steel for increased durability, and they include a black oxide finish for added corrosion resistance. The five flute design reduces vibration for smoother drilling and extended life. Plus, the 1/4" round shank fits all handheld and stationary drills.
Customer
Reviewed in the United States on February 18, 2025
Great countersinks - they do just what they are advertised to do quickly, smoothly, and with no unevenness or chipping rough edges.
KJ
Reviewed in the United States on February 16, 2025
Amazing Bits great for any project. Easily hide your screws of all standard sizes and shapes.
Vincent M.
Reviewed in Canada on June 15, 2024
Good value. Cheaper than retail stores. Wish it came with a carrying case.
Dan Gojs
Reviewed in Canada on May 12, 2024
Use them on aluminum for now and they works fine! Very fast delivery!
wenshao
Reviewed in Canada on March 3, 2024
Drills very clean countersink hole
James W. Allison
Reviewed in the United States on November 15, 2024
I needed to countersink some holes for railing balusters and the Irwin bits did the trick, BUT the shaft on the bits would spin in the drill chuck. It would be better if the bits had a "flat" on the shaft, or a hex (driver-style) shaft. Also be nice(r) if the set came with a plastic case.
A...gamer
Reviewed in the United States on October 28, 2024
These countersink work great. Sharp and cut fast.
Customer
Reviewed in Canada on April 5, 2024
Used two already work great
Vaquero
Reviewed in the United States on April 15, 2024
Countersinks are well made and necessary if you do much wood work or repairs around the house. Good tools.
Shutterbug Guy
Reviewed in the United States on September 29, 2023
I have used an Irwin 5/8" countersink like the one in this set for 30 years. It has held up well. I wanted a set with various sizes, and appreciate that the quality seems the same as the one I purchased 30 years ago. I wish that this came in a plastic storage container to keep these organized. As shown in my photo, it comes in a sealed plastic clamshell package that I did cut open on three sides to use as for storing the 5-piece set. The clamshell would work nicely for this if it weren't heat-sealed on all the edges, but it's hard to retain the snap-together functionality of the clamshell when most of the sealed edge has to be cut away. Overall, a nice quality Counterink Bit set that will last a long time.After I ordered this set, I realized that there is another version available that come in a plastic storage case. Consider that version if the storage case would be useful.
RedRanger
Reviewed in the United States on August 23, 2023
I have used only two of the Counter Sinks so far but they are sharp and work flawlessly !They are what I have come to expect from IRWIN.PROS:Well made.High Quality.Sharp as expected.CONS:NoneOverall:Nice tool set !Work well on wood and plastic.1 Year Update: Still Five Stars !Still sharp, still cuts wood, plastics, soft metals (Aluminum/Copper) without any problems.Don't have to touch up the holes after Countersinking.Biggest thing is to go slow, allow the Countersink to do the work.Nice set of tools !
booboo
Reviewed in the United States on February 22, 2023
I have Erwin cutting tools that I’ve used for years and was able to re-sharpen and reuse. So when I saw the deal on Amazon, I jumped at it. These were made in China, but it appeared to have the same quality and performance that I was used to with the Irwin products made in the United States. That’s not saying they’re going to be the same and hold up as well, but I noticed the quality was there and the sharpness also was there. When I used them, they performed well to so it appears even though they’re made in China they have standards set by Irwin like what the products are made in the US so far so good
Melliott
Reviewed in Canada on December 19, 2021
Seem to be holding sharpness ok after some metal work
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