D.I.D. 520VM Gold Premium X-Ring Chain

Special oil seals produce 50% less friction and 50-100% longer wear life than standard o-ring chain. Features gold and black color plates. D.I.D. is the #1 chain manufacturer in the world. Solid rollers - Shot-peened parts - High cylindrical and roundness accuracy - Exacting tolerances provide low friction - Pre-stretched - Extended riveted bushing "Anti-Kink" design - Special alloy steel - Average tensile strength of 8120 lbs.