The 18 mm socket, 6 point puts torque in your palm. This 6 contact point standard depth socket has a 3/8 inch drive size. The standard socket is sized for metric and Torx nuts and is 18 mm. Socket is made to give you the power to easily get to the nuts you need to reach. Professional quality is what you are known for and using professional tools like the Craftsman 18 mm socket, 6 point simply makes sense. This socket has been forged from hot alloy steel and given a silver finish that only requires a damp cloth for cleaning. The markings on your socket are easy to read even in low light.