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Your cart is empty.KEO ZErO flute countersink and deburring tools are simple, all-purpose tools made of Cobalt that provide flawless countersinking and deburring. The chatter-free cutting action requires minimal power. The microsmooth CNC precision ground construction produces clean, smooth cutting without smearing on a variety of materials. The tool especially excels in countersinking or deburring holes in aluminum, plastics and other nonmetallics. Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys. Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications. Round shanks allow use with a wide variety of toolholding systems. When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging. 90 degree angle.
mike woody
2025-05-19 15:17:47
Well made and cuts the angle I need in both wood and aluminum.
Bryan D
2025-04-11 18:22:28
Retains a sharp edge very well. Highly recommend.
VA Reviewer
2025-02-10 13:59:28
Very expensive but hard to find a countersink this big. I used it on aluminum and it worked wonderfully, cutting away thin ribbons of metal in a smooth and controlled fashion
Gray One
2024-11-20 18:22:08
I like these "zero flute" countersinks for use on wood and aluminum, because they don't chatter and leave a smooth cut. I tried one on steel and it dulled up, so don't do that. After looking at videos on how to sharpen one with a Dremel tool (which I didn't have) I found that using a small round metal file parallel to the walls in the center hole worked quite well. Go from the back to the front cutting edge.The 90 degree countersinks are used for ISO metric screws while 82 degree countersinks are used for non-metric, i.e. American Inch Screws - these are the wood and metal screw you find in hardware stores.
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