Review on Ultimate Fastening Solutions: CONFAST Phillips Concrete Screw Anchor Fasteners by Allen Hart

Bought 100 for just over 25 tapcons. I didn't use the bit that came with it because I needed a longer bit. Used to attach blinds to a brick wall. I used a Dewalt 20v impact drill and installed the screw with a 20v impact. Make sure if you have a Phillips head you use a #3 Phillips bit or you have a good chance of removing the head.