KEO 53512 Cobalt Steel Single-End Countersink, Uncoated (Bright) Finish, 82 Degree Point Angle, Round Shank, 5/16 Shank Diameter, 1/2 Body Diameter

The single flute design keeps it from hopping all over the place like multi-flute versions. This makes for an excellent finish with no chatter marks. Just buy it.

I have used this in plywood and hardwood (walnut) so far. It makes gorgeous, clean countersinks in pre-drilled holes. I literally said Wow out loud to nobody the first time I used it in plywood. I am never going back to those awful multi-fluted countersink bits that leave torn-up jagged edges!

It makes a dang fine smooth tapered hole. Have several fanged countersinks in the box; all exhibit steps around the edges. This one, with the sharp circular hole, is a design achievement.

Great for use on wood. I first drill the pilot hole to the finished size, then use this tool to create a countersink. It cuts the wood very quickly and smoothly. It leaves no chatter marks the way traditional wood countersinks often do.

Best counter sink Ive used for counter sinking metal. Didnt think it would last this long but it has long since paid for itself. Would absolutely recommend and repurchase when the time comes. Superior quality. Scoops like ice cream!

I bought this to counter sink screws in a diy closet cabinet build, and I love this thing. I was skeptical of the design at first, but this thing works better than any other countersink I own. Even in situations where I use a different countersink, I give a light pass over the hole with this one to smooth it out or remove burrs. I will never again not own one of these.

Works as advertised, smooth clean countering

It works well

Not bad

This tool works great. It cut nice and clean on walnut. It is well made and looks the part. My only minor gripe is that the shavings always end up in the hole in the middle. After a few holes I have to use something to push them out.