Hyperglide (hg) series 7- or 8-speed compatible chain, recommended for 1995 and earlier deore lx / stx-rc and 1999 and earlier 105 drivetrains Shimano Hg71 6/7/8 Sped quicklink chain Features hg technology has chamfered inner plates to optimise shifting performance on hg sprockets 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 comes complete with quick link which enables fast tool free chain assembly 7.3 mm chain width, optimised for 7- and 8-speed hg drivetrains corrosion-resistant grey finish on inner and outer plates 116 links, 335 grams