The Dorman M22 x 1.5 Metric Serrated Clockwise Carbon Steel Round Wheel Lug Stud is designed to meet the highest standards of automotive industry durability. Made from carbon steel, this lug stud is salt spray tested for 72 hours to simulate three years of corrosion resistance. It also undergoes industry-standard proof-load testing to ensure strength. The black oxide finish provides additional corrosion resistance. This lug stud is perfect for any automotive application requiring a reliable and durable wheel lug stud. FleetPride is your First Click in Heavy Duty®.