Snow Blower, Thrower, ATV, UTV, Tractor Tire Chains 4 Link Spacing (18 x 850 x 8) Fits Tire Size 18 x 850 x 8 Rim size 8 Zinc plated chains for extra durability 4 Link Chain Spacing adds Traction for riding in Snow, Ice, or though mud Ensures Grip When Using Snow Blades and Snow Blowers Fits Snow Throwers, Blowers, ATVs, UTVs, Lawn Tractors