Made from chrome molybdenum, hardened, tempered and anodised for corrosion resistance. The sockets are sleeved to prevent damage to alloy wheels and nuts. Colour coded for easy size selection. Please note: Alloy wheel impact sockets have an ultra-thin walled design permitting a limited torque range. They are suitable only for wheel nuts and have a maximum torque limit of 475Nm. Sizes: 17mm, 19mm, 21mm, 22mm, 23mm, 24mm & 27mm. Sleeved to prevent damage. Colour coded for easy selection. 1/2″ Drive. 6 Point. Chrome Molybdenum material for strength.