White Knight 791304-1SAM Zinc Finish 1/2"-20 Thread Size Open End Bulge Acorn Lug Nut Wheel Installation Kit with Wheel Lock, (Pack of 16) Thread size: 1/2 inch-20 Height: 0.84 inch Hex size: 3/4 inch Seating: Conical 16 lug nuts, 4 locks, 1 key