Apollo Tools DT1017 41 Piece Socket Set is perfect for any job large or small. The tools are heat treated carbon steel for strength and durability and chrome plated finish to resist corrosion. It comes in a heavy duty blow molded case to securely holds tools in organized spaces. Contains: 1/4" Drive Bit Coupler; 3/8" Drive Ratchet Handle; 3/8" Drive; 3" Extension Bar; Ten 1/4" Drive Metric Sockets: 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm; Eleven 1/4" Drive SAE Sockets: 1/2", 1/4", 11/32", 13/32", 3/16", 3/8", 5/16", 5/32", 7/16", 7/32", 9/32"; Three 3/8" Drive Metric Sockets: 12mm, 13mm, 14mm; 3/8" Drive, 1/4" Driver Adapter; Twelve Chrome Vanadium Bits: Slotted 1/8", 5/32", 3/16", 1/4", PH1, PH2, PH3, PZ0, PZ1, PZ2, PZ3, 1/4" Adapter; Bit Driver.