Order Today to get your equipment back to in top shape. Fits: Husqvarna SC18A Bluebird SC550A These measure 26.625" each with 72 pins/rollers with master joiner link included. These Premium #35 HD chains are made rugged to ANSI Standards. Features hardened solid steel bushings and pins. Shot peened side plates for stress relief, longer wear and greater service life from improved fatigue resistance. Replaces original drive chain with OEM Specs. Bulk Packaged - No retail packaging. Please see our other listings for different drive chains on hand or we can custom make one for you. Chain Pitch: 0.375" Roller Diameter: 0.200" Roller Width: 0.188" Pin Diameter: 0.141" Plate Thickness: 0.050" Tensile strength: 2200 Pounds Get your Lawn Equipment ready by replacing any worn or slack drive chains now. To save with combined shipping just add them all to your cart before you checkout. Please measure and verify the actual # of links or the overall length of your drive chain before ordering. If your chain is longer or shorter and not in our stock contact us, we will make one especially for your needs.