White Knight 3804BK-20AM Black Chrome Finish 1/2"-20 Thread Size Spline Drive Lug Nut with Key, (Pack of 20) Thread size: 1/2 inch-20 Height: 1.37 inch Key adapter hex size: 3/4 inch or 13/16 inch Seating: Conical 20 lug nuts, 1 key adapter