... steel. Surface treatment:Honed Nickel Plated Sockets Rigidity 120PCS 1/2"&3/8"&1/4" Dr SOCKET SET :Contents:10PCS-SPANNER: 9 ... . SOCKETS: 5/32",3/16",7/32",1/4",9/32",5/16",11/32",3/8",7/16",1/2" (6PT)1PC-1/4 ... " DR. EXTENSION BAR: 2"4PCS-1/4" DR. DEEP ... )9PCS-3/8" DR. SOCKETS: 3/8",7/16",1/2",9/16",5/8",11/16",3/4",13/16",7/8"(6PT)8PCS-3/8 ...