Screwdriver Bit Set, No. of Pieces 21, Hex Shank Size 1/4 in, Fastening Tool Material Steel, Impact Rated Yes, Impact, Includes Phillips #1, 2, 3 x 1 in, Square #1, 2, 3 x 1 in, TORX 20, 25, 27, 30 x 1 in, Phillips #1, 2 x 2 in, Square 1, 2 x 2 in, Phillips #2 x 6 in, Square #2 x 6 in, Mag Bit Holder, 1/4 in, 5/16 in, 3/8 in, 7/16 in Mag Nutsetter, Bit Length 1 in, 2 in, 3 in, 6 in