Kmc x10e ept ebike 10 speed chaindouble x durability unmatched chain life kmc guaranties your satisfaction ecoproteq anti rust technology ht e non directional design assembly of this chain is independent of direction it allows maximum compatibility no matter mtb or race this chain fits all features 12 x 11128pin length 5 88mm compatible with all 10 speed road and mtb drive train systems hi performance special design for mid motor e bikes double x durability increased pin power non d