This socket set by Craftsman® features a black oxide finish for corrosion resistance and large markings to help you quickly identify the sockets you are looking for. Also, the 6-point socket design allows for increased torque due to a larger contact surface. Sockets meet or exceed ASME specifications. This set includes 9 deep sockets: 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 17 mm, 18 mm, and 19 mm. This product is backed by the Craftsman® full lifetime warranty.