Do not send us an email or note specifying what length chain you need. You must ORDER the correct length. BUYER must check chain length needed before ordering. Any info provided by seller regarding stock length is to the best of our knowledge, but seller is NOT responsible for chain that is ordered incorrectly. Any return for different length chain will be at buyer's expense, including shipping both ways. PLEASE check BEFORE ordering. Manufactured by Factory Spec Designed to meet the demands of today's high-performance machines Reduces friction and power loss up to 40% over basic O-ring chains Seals better than traditional O-ring chains Lasts 50% longer than standard O-ring chains Tensile strength of 8,200 pounds Made in China Includes 520 pitch x 72 Link chain Black in color Clip style master link