KMC X12 12 Speed ChainThe KMC X12 12 Speed Chain is the ideal addition to your bike, offering faster shifting performance whether it’s for your Road or mountain bike (MTB). Boasting a high-performance construction, it is suitable for use in SRAM MTB and Shimano 12 speed derailleur systems, so you are prepared no matter whatever the challenge. Features:Use: MTB, RoadSpeed: 12 speedSize: 1/2"x11/128"Pin Length: 5.2mmLinks: 126Compatibility: SRAM MTB and Shimano rear 12 speed derailleur systemsHigh-PerformanceExtremely durableNon-DirectionalWeight: 268g (approx.)Buy KMC Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.