The Dorman 3/4" Carbon Steel Serrated Round Clockwise Wheel Lug Stud is designed to meet SAE automotive industry standards for durability and strength. It is salt spray tested for 72-hours to simulate three years of corrosion resistance and undergoes industry-standard proof-load testing to ensure strength. The black oxide finish provides additional corrosion resistance. FleetPride is your First Click in Heavy Duty®.