Grizzlar GARDEN TRACTOR CHAIN Ladder Style Grizzlar's Garden Tractor Ladder Style Chains for use with garden tractors and other special vehicles. - Fits 20x7-12, 20x8.00-10, 20x8.00-8, 20x9.00-8 tires. - 4 link spacing for lower cost. - Manganese steel for longer durability. - Twist link crossmembers. - Can be turned around for longer life. - Inexpensive and simple to install. - Extension kits available for differences in actual tire sizes. Packaging: 1 pair per cotton bag. - For deep lug tires our net style tire chains should be used. EXTENSION KIT: Actual tire dimensions can vary widely with Garden Tractor tires. The extension kit allows to adapt the tire chains to tires which are larger than normal All of the numbers of your tire size have to exactly match (both number and the order in which the numbers are listed) with our tire size in the application list. If in doubt, contact us. For a complete application list: see pictures. Always check your owner´s manual for possible clearance and use restrictions.