Security Chain Whitestar Alloy Tire Traction Chain is designed to be used on passenger vehicles, including pickups and SUVs, also has the easiest installation and best all-around traction performance. It has been adapted to keep up with the ever increasing demand for products that can operate the typically small clearances allowed around the drive tires on today's cars and light trucks. All Whitestar Alloy size meets the SAE class "S" clearance requirements. The cross chain link is made of manganese alloy steel, allowing them to be shorter and lighter than other tire chains. Its lighter weight helps reduce the fly-off during operation and the shorter links provide more gripping points than conventional chains. The reduced size and weight of the links also helps it to be more durable than other chains. Less mass equals less wear on both the chain and the road surface.