Order Yours Today to get your equipment back in top shape. Mower Transaxle / Transmission Replacement REVERSE Drive Chain These rugged ENDLESS LOOP drive chains measure 12" with 24 pins/rollers total. Our Premium roller chains are made rugged to ANSI Standards with hardened solid steel rollers and pins. Shot peened side plates for stress relief, increased fatigue resistance and longer service life. Bulk Packaged - No retail packaging. Original fit with no master link or joiner link. These are configured as an endless loop. Chain Pitch: 0.500" Roller Diameter: 0.306" Roller Width: 0.250" Pin Diameter: 0.141" Plate Thickness: 0.050" Tensile strength: 2100 Pounds If your mower wheels are locked, 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.