Irwin 51-Piece Insert Screwdriver Bit Set

Manufactured with industrial-grade S2 steel for maximum life and durability. Drawer case set includes Phillips 1" insert bits: PH0, (3) PH1, (4) PH2, (3) PH3; Square 1" insert bits: SQ0, (2) SQ1, (4) SQ2, (3) SQ3; Slotted 1" insert bits: 4-5SL, 6-8SL, (2) 8-10SL, 10-12SL; TORX 1" insert bits T10, (2) T15, (2) T20, (2) T25, T27, (2) T30; Hex 1" insert bits: 5/16", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16"; Pozidriv 1" insert bits: PZ1, PZ2, PZ3; Spanner 1" insert bits: #3, #4, #6, #8, #10; and 2-1/4" magnetic bit holder with c-ring.