Chrome vanadium alloy steel for strength; Triple chrome plating and high polish finish for added life; Meets and exceeds US federal standards for strength and performance; The Evercraft master socket set is a complete collection of most frequently used sockets and accessories. Socket Size: 5/32 in, 3/16 in, 7/32 in, 1/4 in, 9/32 in, 5/16 in, 11/32 in, 3/8 in, 13/32 in, 7/16 in, 1/2 in, 9/16 in, 5/8 in, 11/16 in, 3/4 in, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 19 mm; UNSPSC: 27111703