TPI (20 pcs) M12x1.50 Top Tier Chrome Spline Drive/Tuner Wheel/Lug Nuts w/key, C611145SD-20, 1.30" Tall, 3/4" & 13/16" / 19mm & 21mm Dual Hex Key Spline Drive/Tuner Closed End Design, 1.30" Tall, 3/4" & 13/16" Hex, Cone Seat. Intended for use with aftermarket wheels that require a slim lug nut for tight lug holes 3 layers of brilliantly leveled Nickel undercoating followed by 1 reflective layer of Chrome Cold forged and heat-treated for Optimal Hardness. Precision Threads