The Dorman M22 x 1.5 Serrated Carbon Steel Round Wheel Lug Stud is designed to meet the highest standards of automotive industry. This wheel lug stud is made from carbon steel materials that have undergone industry-standard proof-load testing to ensure strength and durability. It has also been salt spray tested for 72-hours to simulate three years of corrosion resistance. The black oxide finish provides additional corrosion resistance. With its 22 mm thread diameter, this wheel lug stud is sure to provide a secure fit. FleetPride is your First Click in Heavy Duty®.