The directional 10-speed HG-X chain from Shimano specifically for mountain bikes is the next evolutionary step in shifting technology. This chain stays smooth, saves weight and improves overall system performance. HG-X chain with directional design: The right side is optimized for switching the front, the left for rear. For use with: XTR/DEORE XT/SLX. Product features - Shimano CN-HG54 Use: MTB Series: Deore Dyna-Sys Type: HG-X 10-speed Inner plate: grey coated Outer plate: brown coated Links: 116 Weight 280g (per chain)