Hongsheng Chrome Acorn Bulge Lug Nut 2 PC Style, 1.35'' Tall (1/2''-20) Pack of 20 Wheel Nuts Closed bulge acorn design provides greater seating surface to prevent damage during installation Coating: chrome Mechanical property: 6 grade Bulge closed acorn design, 35mm Tall, 3/4" Hex, Cone Seat.