The MILWAUKEE 42-Piece Driver Bit Set provides solutions for fastening applications. The driver bits are made of premium-grade S2 tool steel for increased durability. This 42-piece set includes a variety of tip types for the most-common fastening applications. Magnetic drive guide holds fasteners in place while the sleeve retracts as the screw is driven into material. Designed for use with drill drivers. The set is organized in a customizable accessory case designed for use in PACKOUT. Includes (1) magnetic drive guide, (1) 1" 3/16" Hex, (1) 1" 1/4" Hex, (1) 1" PH1, (6) 1" PH2, (1) 2" PH2, (1) 3-1/2" PH2, (2) 1" PR2, (2) 1" PH3, (1) 2" PH3, (2) 1" SQ1, (6) 1" SQ2, (1) 2" SQ2, (1) 3-1/2" SQ2, (1) 1" SQ3, (1) 2" SQ3, (1) 1" T10, (1) 1" T15, (1) 2" T15, (1) 1" T20, (1) 2" T20, (1) 1" T25, (1) 2" T25, (1) 1" T30, (1) 1" #6 SL, (1) 1" #8 SL, (1) 2" #8 SL, (1) 1" #10 SL, (1) 2" #10 SL, and customizable medium case.