Hyperglide (HG) series 9-speed compatible chain recommended for 105 Deore LX & Nexave C500 drivetrains HG technology has chamfered inner plates to optimise shifting performance on HG sprockets Durability is assured through a chromising treatment on link pins & the heat treatment of rollers pins & 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 drivetrains Corrosion-resistant grey finish on inner & outer plates 114 links 304 grams