Gearwrench Set Skt Hex Bit Met 3/8 & 1/2Dr 10Pc

80578 GEARWRENCH SET SKT HEX BIT MET 3/8 & 1/2DR 10PC GEARWRENCH bit sockets have heat treated alloy steel base sockets and S2 steel bits for durability and long tool life. Our hex bit sockets help users loosen & tighten internal hex fasteners. The 10 piece 3/8in and 1/2in drive metric hex bit socket set comes with a socket rail for storage and organization and includes sizes 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 12mm, 14mm, and 17mm. FEATURES Bits made of S2 steel for strength and durability Heat treated for maximum durability Hard stamped size markings