KMC's latest breakthrough in rust protection. EcoProteQ treatment doubles the rust resistance compared to the RB treatment. Benefits of the smoother coating are less noise, great performance, maximum rust resistance and great look.KMC Z1 EPT Narrow Chain Features1/2" X 3/32" - 112 Links, pin length 7.3mmFor Internal gear hub / single speedEcoProTeQ Coating (EPT) Anti-Rust technologyLess maintenanceHigh reliability
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