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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. Titanium nitride coatings add a hard layer of gold-colored ceramic to the surface that extends tool life and permits faster cutting speeds than uncoated tools. 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.
BMoore
Reviewed in the United States on October 14, 2020
Very nearly perfect. The only thing that keeps them from being five stars is they leave a tiny burr on the cutting edge and then apply the coating over the burr. If you don't deburr prior to use the cutting edge is dull and gives poor results. If you do deburr they work fantastic, but can't last quite as long because I removed part of the coating from the cutting edge in deburring them. Two swipes with a small round ultrafine Arkansas stone is all it takes. Outside of that they are great countersinks handling nearly all of my steel countersinking chores. If you have a lot of stainless to do I recommend a single flute carbide.
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