Manufactured from Chrome Vanadium steel with electrodeposition finish for added corrosion resistance. Sizes: 10, 11, 12, 13, 14, 17, 19, 21, 22, 24, 27mm, 1/2", 9/16", 5/8", 11/16", 13/16". Deep WallDrive sockets. Suitable for use with impact type air wrenches. Supplied in storage case. Lifetime guarantee*. Model No. AK685