One Chain for All - Compatible with Shimano, Campagnolo and SRAM 11-speed derailleur systems Phenomenal Shifting Performance, Asymmetrical Chamfering Avoids Interference for Smooth Operation Non-Directional Design: assembly of this chain is independent of direction. It allows maximum compatibility, no matter MTB or Race: this chain fits all Lightweight, shorter length pins combine slotted plates with high-grade materials to reduce overall weight Double X-Bridge outer plate configured with precisely articulated angles for quicker and smoother gear shifting and quieter riding