Main Features Chain Shimano Deore -10 Speed HG54Hg-X chain uses a directional design with specifically designed inner and outer plates to optimize shifting over the bottom bracket and cassette. Shimano Deore -10 Speed HG54 ChainHg-X chain uses a directional design with specifically designed inner and outer plates to optimize shifting over the bottom bracket and cassette.The outer plate design has been developed to reduce the chance of chain binding.The inner plate has been developed to improve contact with the gears, make shifting smoother under high load, increase pedaling efficiency and stiffness, and achieve near-silent operation.Durability is ensured through a chrome treatment on link pins and heat treatment of rollers, pins and plates Anti-mud capability Open design internal links.The spread of the pins gives unsurpassed side chainring retention, allowing the chain to far exceed the BS/ISO standard for breaking strength. Chain is optimized for Shimano's HG-X MTB 10 speed drivetrains.Only Corrosion resistant gray finish on interior and exterior plates.