Order Yours Today to get your equipment back in top shape. SNAPPER 16 HP Ride-On Lawn Tractor Mower Drive Chain These rugged drive chains measure 21" with 56 pins/rollers made as an ENDLESS LOOP with no master joiner link. Our Premium #35 chains are rugged to ANSI Standards with hardened solid steel rollers and pins. Shot peened side plates for stress relief and longer service life. Bulk Packaged - No retail packaging. Quick and easy installation with minor disassembly. Chain Pitch: 0.375" Roller Diameter: 0.200" Roller Width: 0.188" Pin Diameter: 0.141" Plate Thickness: 0.050" Tensile strength: 2100 Pounds If your blower is making a popping / clicking noise or sounds like it is binding when it runs, not running as quiet as it once did , the chain is worn/stretched beyond it's service limit and ready to fail. Order replacements now to have on hand for the inevitable. Please measure and verify the actual # of links or the overall length of your drive chain before ordering. If the chain you need is longer or shorter, contact us, we will make one especially for your needs.