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 Fully compatible with every other component in the Eagle ecosystem 12sp 1/2x3/32 126L Silver/BlackUPC/EAN/GTIN: 710845813085