The 11-in-1 screwdriver includes the 8 bits and 3 nut drivers most requested by professionals. The bit prevents bit wear from hardened screws and extends bit life when fastening specialty screws found in electrical boxes, conduit couplers, outlets, and other common job site fixtures. Milwaukee® Multi-Bit Screwdriver, 11-in-1, Measurement System: Imperial, Phillips®/Slotted/Square/Torx® Bit, 10 in Overall Length, Plastic/Rubber Tri-Lobe Handle, 11 Piece, Quick-Change Bit Retainer, Forged Steel