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: 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4" Deep sockets and 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4" Shallow sockets.