Heavy duty twisted link Truck Tire Chain. 7.14mm thick. Recommended for over the road, chain law, semi trucks.For plowing or extended use, the Heavy duty truck tire chains below are recommended when available in your size. For easier installation of twisted linkTruck Tire Chains see our Sno-Chain Ramps. Optional rubber or spring tensioners are recommended. Fits: QR78-15 35X13.5-15 37X13-15 315/75R16LT 345/55R16LT 37X12.50-16 38X13-16 38X12.50-16.5 315/70R17LT 325/70R17 345/55R17 35X12.50-17 37X12.50-17 305/60R18 305/70R18LT 325/65R18 35X12.5-18 285/65R20 295/65R20 325/60R20 35X12.50-20 325/50R22LT 35X12.5-22 295/60R22.5