Bits too short

I am a cabinet maker, I probably own 6 counter sinks. And this one is my favorite. But, it drives me nuts that I have to use this one and then switch drills to a longer bit to finish drilling through the 1.5" face frame. I don't mind that the bits are proprietary and I have to buy parts from KM. But I wish they would make longer ones also. If your going to sell a fancy tool and professionals are going to buy it. Make it something they can use. I think I purchased this a year ago now, at the time I asked KM if they would make longer bits, I even offered to buy them in bulk. Looks like that is not going to happen. I would give this 3.5 stars, 5 if they had longer bits available. I would even buy a second one and keep that as my shorter drill.

Love this one

The first one I ordered, the lift up retaining ring somehow got stuck, to make it worse, it was “stuck” in the exact position I couldn’t access any of the Allen screws to take apart the countersink. So, I bought a new one, since I don’t know what I did the first time, I’m being very careful.

mostly ok, but major flaw

The countersink functions well, mostly. The metal quality of the bits and the cutter is poor. The bit dulled VERY quickly, and a cutter tooth snapped off after about a week of use. More importantly the shank is a non standard size and doesn't work well with most collets I've tried. It will not eject from quick-eject collets like Dewalt's. In fact, it got stuck in an Irwin extension collet and is now permanently attached. I had previously used many bits with that same Irwin collet and it worked perfectly until I used it with this countersink. If the shank were standardized and the metal quality were improved I would enthusiastically recommend this, but as is, I simply cannot. This doesn't feel production ready.