3pc Extwheel Srvcnomarscktset The most popular size lug nuts in the performance market. ½” Drive Suitable for use with impact tool. Nylon sleeve and insert to prevent alloy wheel damage or marring. Color-coded sockets for simple identification. Extended socket length eliminates needs for torque extension. CR-MO Alloy Steel for long lasting use. Socket Sizes 1 PC 1/2 in. 17mm Nylon Protected Wheel CR-MO Socket 1 PC 1/2 in. 19mm Nylon Protected Wheel CR-MO Socket 1 PC 1/2 in. 21mm Nylon Protected Wheel CR-MO Socket Includes (3) Additional Nylon Protective Sleeves 40307