One Chain For All - Compatible with all Shimano, Campagnolo and SRAM 9-speed derailleur systems Double X durability, unmatched chain life - KMC guaranties your satisfaction X-bridge technology provides phenomenal shifting performance with a uniquely designed outer plate configured with asymmetrical chamfering for quicker and smoother gear shifting and quieter riding Non-directional design: assembly of this chain is independent of direction. It allows maximum compatibility, no matter MTB or race: this chain fits all 1/2" X 11/128" - pin length: 6.6 mm.114 Links.Weight: 288 grams.Supplied with joining link