Order Today to get your equipment back to in top shape. John Deere 50 Tractor Mounted Snow Blower Replacement Drive Chain These rugged drive chains measure 45" with 72 pins/rollers including a supplied master joiner link. Our Premium #50 chains are made 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 included master joiner link. Chain Pitch: 0.625" Roller Diameter: 0.400" Roller Width: 0.375" Pin Diameter: 0.200" Plate Thickness: 0.080" Tensile strength: 6100 Pounds If your drive chain 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.