Review on 🔧 Pit Bull CHIAU0600 9 Inch 6 Piece: Premium Tools Set for Ultimate Efficiency by James Dominick

I wasn't expecting much for fifteen dollars and got even less. The threaded spindle of these bits does not reach the cutting edges and spurs. This means that all but the smallest in corsets cannot really function. You will need a heavy duty electric drill or drill to properly engage the grooves. All cut surfaces are also very rough and leave a very rough hole (see photo). I returned my Revain set and after some searching I found a 13 bit Irwin set on ebay for forty dollars. They are over 50 years old but in good shape and still far superior to these. If you're looking for drill bits to use with a manual stop, I also recommend going that route.