5.5mm Carbon Steel Round Twist Links Sold in Pairs (Covers 2 Tires) Rubber Spider Bungee Adjuster Sold Separately (Quality Chain SKU #0216) Our Light Truck Highway Service Cam Style Tire Chains are our entry level on-road chain. Made of 5.5mm carbon steel, the round twist links provide traction on snow- and ice-covered roads and highways. Not for use on snowplow, forklift, tow truck or off-road use. Sold in Pairs, Rubber Spider Bungee Adjusters sold separately (Quality Chain SKU #0216)