KMC E11 EPT 136 Links 1/2x11/128 Bicycle Chain a chain specially designed for electric bikes Suitable for 11-speed cassettes Number of links: 136 rivet width 5.65mm Reinforced riveted joints are optimized for 1/2 x 11 shifting systems X-Bridge technology on the outer chain links ensures fast, smooth and precise gear changes Electric bike chain with reinforced pull force before chain extension and anti-corrosion coating Special anti-corrosion EPT (EcoProTeQ) coating doubles the rust resistance of standard coatings, and also ensures less noise, optimal performance, maximum rust resistance and a great appearance high resistance to torsion and maximum durability are ensured by a special rivet connecting the chain links