This 11 speed KMC chain is high performing and extremely durable. The X-Bridge technology is specially designed to enable fast smooth and precise shifts thanks to the outer plates. Compatible with all 11 speed road/MTB systems. The X-Bridge is a new outer plate configured with precisely articulated angles for quicker and smoother gear shifting and quieter riding. Light weight shorter length pins combine with high-grade materials to reduce weight. With unique stretch-proof treatment the durability has been effectively enhanced by reducing the attrition between inner plates and pin. As a result of this chain life has been significantly improved. 1/2' X 11/128' Pin length 5.5mm Hi-Performance Half Nickel plated Extremely durable 114 and 118 Links