... steel. Surface treatment:Honed Nickel Plated Sockets Rigidity 120PCS 1/2"&3/8"&1/4" Dr SOCKET SET :Contents:10PCS-SPANNER: 9 ... /32",1/4",9/32",5/16",11/32",3/8",7/16",1/2" (6PT)1PC-1/4" DR. EXTENSION BAR ... ,15,16,17,18,19MM(6PT)9PCS-3/8" DR. SOCKETS: 3/8",7/16",1/2",9/16",5/8",11/16 ... -QUICK RATCHET HANDLE: 1/4"&3/8"&1/2"(24Tooth)3PCS-UNIVERSAL JOINT: 1/4"&3/8"&1/2"7PCS-BITS: T10,T15,T20 ...