The Do it Best 32-Piece Impact Screwdriver Bit Set is built for heavy-duty use, offering 50x life compared to standard bits. Designed to be torque resistant and impact-ready, this set ensures durability and reliable performance for your toughest jobs. Includes (30) 1" driver bits: PH0, PH1, (2) PH2, PH3, SL 3/16", SL 1/4", SL 5/32", PZ0, PZ1, PZ2, PZ3, (2) SQ1, (3) SQ2, (2) SQ3, T10, T15, T20, T25, T27, T30, T40, Hex 3, Hex 4, Hex 5, Hex 6; (1) 1/4" drive adapter bit holder, and (1) magnetic bit holder.