This convenient 8pc Torque Limiting Extension And Protective Impact Socket Combo Set will have your wheel torque needs covered. It includes the most common wheel torque limits in one great tool kit. The lug nut sockets include protective sleeves and inserts to prevent wheel damage, and are color coded for quick reference. The 1/2" drive set consists of 4 Torque Limiting Extensions: 90, 100, 110 and 120 ft/lbs AND 4 Protective Lug Nut Impact Sockets: 17mm, 19mm(3/4"), 21mm(13/16"), and 7/8". Packaged in a convenient blow-molded plastic case.