11-speed Nickel plated steelPrecision made in Germany using long-lasting, heat-treated steel with a corrosion resistant high quality Nickel silver finish. This high-grade fully nickel-plated chain is perfectly suited for every terrain. The innovative, high performance engineered plate design provides top gear-changing properties.Supplied with the exclusive, re-usable, tool-free Connex QR joining link. Compatible with all bicycle 11-Speed gear systems.