7pc Tapered Countersink Drill Set
Bit Sizes: #5, #6, #7, #8, #9, #10, #12
Drills a tapered pilot hole which allows screw to have maximum bite
Adjustable stop collar allows you to set the depth of countersink
Had these for years. great bits. Didn't get the nice case shown back when I got them . buying a set for my son.
Worked just fine , excellent deal for the price.
I recently purchased this set and when they arrived I was happy to get to use them, but when I took them out of the container I noticed there was something wrong. On 4 out of the 7 countersink and depth stop collets where sitting crooked on the tapered drill bits, I first thought that one of the allen set screws were just over tightened so I went to loosen the set screws and that is when I found out that all 4 of the set screws on all of the countersink bits were cross threaded and nearly impossible to get out, once I did get them out I retapped them and then I was able to align the countersink collets and the drill bits. Unfortunately that didn't work, so I took them all apart again and and that is when I noticed that the depth stop and countersink collet were both milled crooked so now I don't know what to do to fix them or if I am going to return them, but I guess that is what you get for only paying $17 for a set of countersink bits.