Diablo, 24 piece screwdriving set. Set consists of (1) 1" #1 phillips drive bit, (2) 1" and (2) 2" #2 phillips drive bits, (1) 1" #2 phillips reduced drywall drive bit, (1) 1" #3 phillips drive bit, (1) 1" #1 square drive bit,(1) 1" and (1) 2" #2 square drive bits, (1) 1" #3 square drive bit, (1) 1" #10 torx drive bit, (1) 1" and (1) 2" #15 torx drive bits, (2) 1" and (2) 2" #20 torx drive bits, (2) 1" and (1) 2" #25 torx drive bits, (1) 1" #30 torx drive bit, (1) 1" #40 torx drive bit, (1) 2-3/8" magnetic drive bit holder. Diablo's hi-performance screw driving set delivers extreme durability and longer life in the installation and removal of fasteners. This set is impact strong.