Chrome vanadium alloy steel for strength and long life; Triple chrome plating and ultra smooth high polish finish for added life; Meets and exceeds US federal standards for strength and performance; The Evercraft socket set is a complete collection of most frequently used sockets and accessories. Contents: (32) Sockets,Deluxe Ratchet,(2) Extensions,Universal Joint Adapter. Socket Size: 3/16 in, 7/32 in, 1/4 in, 9/32 in, 5/16 in, 11/32 in, 3/8 in, 7/16 in, 1/2 in, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm