The Shimano Hyperglide (HG) series 9-speed compatible chain is recommended for Ultegra, Deore XT, and Nexave C900/C600 drivetrains. HG technology has chamfered inner plates to optimise shifting performance on HG sprocket and durability is assured through a chromising treatment on link pins, and the heat treatment of rollers, pins, and plates. Mushrooming of the pins gives unsurpassed side-plate retention, enabling the chain to far exceed the BS/ISO standard for breaking force.6.57 mm chain width, optimised for 9-speed Super Narrow HG drivetrainsCorrosion-resistant grey finish on inner and outer platesZinc-alloy silver finish on outer plates, and grey finish on inner plates increase corrosion resistance116 links, 310 grams