Solid pins, inner and outer plates make for an economical chain choice with all the performance of KMC's level X-Series chains. - Compatible with Campagnolo, Shimano, or SRAM 10-speed systems - Eco ProTeQ treatment doubles the rust resistance compared to KMC's RustBuster treatment. - Double X bridge shape with inner and outer plate chamfering for smooth and fast shifting - Stretch Proof heat treatment so the chain last longer and goes farther - Mushroom riveted pins for the highest pin power and allows shifting under heavy loads