TPI C726445XCC1 Spinning Cap Chrome Cone Seat Lug/Wheel Locks w/Key,Spinning Head (M12x1.50 Thread Size) - Set of 4 w/key 39mm Overall Length M12x1.50 3 layers of brilliantly leveled Nickel undercoating followed by 1 reflective layer of chrome Cold forged and heat-treated for Optimal Hardness These lug/wheel locks are designed for cone seat wheels. Please check your specs before ordering.