AccuWheel KEY-TO7SPCB 7 Point Spline Drive Small Diameter Lug Nut Key - 3/4" and 13/16" Hex Drive - for 12x1.5, 1/2" and 12x1.25 7 Spline Lug Nuts Spline key for AccuWheel Chrome Spline Lug Nuts, sizes 7/16", 12X1.25, 12X1.50, 1/2". For use with small diameter 7 spline lug nuts. This spline key "WILL NOT" fit on 14X1.50, 14X2.0 and 9/16 tread sizes spline nuts. Dual hex sizes 3/4" and 13/16" Cold forged then heat treated for exceptional strength