Astro Tools 78818 8 Piece Torque Limiting Extension and Protective Impact Socket Combo Set 8pc set includes common torque limits and socket sizes for wheel mounting Lug Nut sockets feature protective sleeves and inserts to prevent wheel damage Color coded for quick reference 4 Torque Limiting Extensions: 90, 100, 110 and 120ft/lbs 4 Protective Lug Nut Impact Sockets: 17mm, 19mm (3/4"), 21mm (13/16"), and 22mm (7/8")