The NX Eagle chain is designed and manufactured using SRAM's Eagle architecture, so it is fully compatible with every other component in the Eagle ecosystem. The NX Eagle chain features solid pin construction, Eagle PowerLock and smooth, efficient shifting that you can count on every time out. Eagle PowerLock chain connector with FLOW LINK technology provides better chain-guiding and increased longevity Unique features and design also provide significantly improved wear resistance on Eagle cassettes and rings Designed to be used with Eagle 12-speed components 126 links PowerLock included