I've been using DeWalt countersinks for a long time and the only thing I have to do is sharpen the tips as they wear out. With the FTG Max torque set, the large cutter broke when I drilled through it in a 2x4 Douglas fir stand. The presenter seems to have missed the name "Maximum Torque". I used a 12v hammer drill for the job, but it was the same drill that I use for all my other drill bits and countersinks that I have. some seem to be good, but my experience with their quality makes me doubt.