Jorgemotor CGJ11013 REPLACEMENT KEY FOR 6 SPLINE TUNER LUG NUTS BLACK WHEEL LOCK TOOL 12x1.5 12x1.25 Our 6 spline lug nuts (open or closed end) - 12x1.5mm, 12x1.25mm, 7/16", 1/2". They will not work on 14MM Lug nuts.