The ROP Shop Pair 2 Link TIRE Chains 18x6.50x8 for Simplicty Lawn Mower Garden Tractor Rider PAIR 2 Link TIRE CHAINS 18x6.50x8 For Simplicty Lawn Mower Garden Tractor Rider Chain Specs: Outside Links 0.157" (4mm) / Crosslinks 0.238" (6mm) Set of 2 Zinc-Plated Chains. Chains Only, Tires NOT Included Quality Aftermarket Part with 1 Year Warranty