The Dorman 16 Serrated Round Carbon Steel Wheel Lug Stud is designed to meet the highest standards of automotive industry durability. This wheel lug stud is made from carbon steel materials and undergoes industry-standard proof-load testing to ensure strength and reliability. It is also salt spray tested for 72-hours to simulate three years of corrosion resistance. The black finish provides additional corrosion resistance. This wheel lug stud will provide long-lasting performance. FleetPride is your First Click in Heavy Duty®.