Solid pins, inner and outer plates make for an economical chain choice with all the performance of higher level X-Series chains. Eco ProTeQ treatment doubles the rust resistance compared to KMC's RustBuster treatment. Stretch Proof heat treatment so the chain last longer and goes farther.
![Deore RD-M591 Der. [Long]](https://dev.perennialcycle.com/media/catalog/product/cache/c74721b30674da8ef4088b970b01e286/E/v/EvoMagento-SHI-7590_2.jpg)
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