Titan HD Mud Service Light Truck Link Tire Chains OffRoad Mud 8mm 31x9.50-15. Size based on NACM Specifications. How many tires does this cover? Gaskets / Sets & Seals.This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts & Accessories\Wheels, Tires & Parts\Wheel & Tire Accessories\Tire Chains, Anti-Skid & Socks". The seller is "patrickmahoney" and is located in this country: US. This item can be shipped to United States, Canada.