KMC X10SL 10-Speed Bicycle Chain (FBA OEM Value Packaging) Compatible with 10 speed drivetrains NON-Directional Design: assembly of this chain is independent of direction! It allows maximum compatibility, no matter MTB or Race: this chain fits all. Enhanced Durability: With unique SP (StrechProof) treatment, the durability has been effectively enhanced by reducing the attrition between inner plates and pin. As a result, chain life has been significantly prolonged. X-Bridge: This is on the outer plate, configured with precisely articulated angles for quicker and smoother gear shifting and quieter riding. Lightweight shorter length pins length combine with high-grade materials to reduce weight. Tensile strength safety is assured with a minimum 1020kgf above ISO standards. Fulfilled by Amazon. Fast Shipping. 100% Satisfaction Guaranteed.