The basis of every Eagle(TM) drivetrain is its chain-and the NX Eagle(TM) chain is designed and manufactured using genuine SRAM&&';;s Eagle(TM) architecture, so it is fully compatible with every other component in the Eagle(TM) ecosystem. The NX Eagle(TM) chain features solid pin construction, Eagle(TM) PowerLockA(R) and smooth, efficient shifting that you can count on every time out. FEATURES/BENEFITS Eagle(TM) PowerLockA(R) chain connector with FLOW LINK(TM) technology provides better chain-guiding and increased longevity. Unique features and design also provide significantly improved wear resistance on Eagle(TM) cassettes and rings. SPECIFICATIONS FOR NX EAGLE(TM) CHAIN TECHNOLOGY HIGHLIGHT(S): FLOW LINK(TM), POWERLOCKA(R), X-SYNC(TM)2 CLOSING LINK: Eagle(TM) PowerLockA(R) WEIGHT: 278g (126 links) MATERIAL: Steel SPEEDS: 12 COLORS: Grey COMPATIBILITY: All levels of Eagle(TM) drivetrain systems.