The Dorman 16 Serrated Carbon Steel Clockwise Stud Wheel Lug Stud is the perfect choice for your automotive needs. This stud is made from carbon steel materials that meet SAE automotive industry standards for durability and strength. It has undergone salt spray testing for 72-hours to simulate three years of corrosion resistance and industry-standard proof-load testing to ensure strength. The black oxide finish provides additional corrosion resistance. FleetPride is your First Click in Heavy Duty®.