The OEMTOOLS 1/2 Inch Drive 6 Pt. Deep Wall Socket (27 mm) is made with a Hard Chrome™ Finish and is easy to clean. The sockets are made with special alloy steel, which is heat-treated for extra strength. The sockets have a Posi-Grip No-Slip® design that provides off corner loading for greater torque and the chamfered ends allow the socket to easily slip over the bolt head.