Irwin Fastener Drive Insert Bit Set, Series: 1866987, 51 Pieces, Includes: (1) 2-1/4 in Bit Holder and (50) 1 in Screw Driving Bits; Philip Style (1) NO 0, (3) NO 1, (4) NO 2, and (3) NO 3. Square Style: (1) NO 0, (2) NO 1, (4) NO 2, (3) NO 3. Slotted Style: (1) 4-5, (1) 6-8, (2) 8-10, and (1) 10-12. Torx Style: (1) T10, (2) T15, (2) T20, (2) T25
Irwin Fastener Drive Insert Bit Set, Series: 1866987, 51 Pieces, Includes: (1) 2-1/4 in Bit Holder and (50) 1 in Screw Driving Bits; Philip Style (1) NO 0, (3) NO 1, (4) NO 2, and (3) NO 3. Square Style: (1) NO 0, (2) NO 1, (4) NO 2, (3) NO 3. Slotted Style: (1) 4-5, (1) 6-8, (2) 8-10, and (1) 10-12. Torx Style: (1) T10, (2) T15, (2) T20, (2) T25