Chrome vanadium steel construction. Ideal for automotive repair, bike assembly, plumbing, woodworking, and any DIY projects. Designed with a 6-point configuration to evenly distribute pressure on fasteners to minimize wear. Sizes included: 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 1/2" Deep sockets and 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 1/2" Shallow sockets.