Order Today to get your equipment back to in top shape. MTD ROTO TILLER Replacement Drive Chain These rugged drive chains measure 19" with 38 pins/rollers including an included master joiner link. Our Premium #40 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 included master joiner link. Chain Pitch: 0.500" Roller Diameter: 0.312" Roller Width: 0.312" Pin Diameter: 0.156" Plate Thickness: 0.060" Tensile strength: 3800 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.