It might look normal from the outside but the engineering inside this incredible chain design that makes possible a gear range previously found only in 2-chainring drivetrains. And it’s also the biggest contributor to the eagle™ drivetrain’s ultra-smooth precise durable and quiet performance. The eagle™ chain’s links have a smooth radius with no sharp edges or chamfers which yield a significant reduction in noise friction and wear on chainrings and cassette cogs. This design also allows for a flatter plate which means more consistent chain riveting and greater overall strength. - compat - speed (cn): 12s-eagle - chain length (links): 126 links - color - outer link: black gold - color - inner link: black gold - chain connector: powerlock - inner link finish: chrome plated +pvd - outer link finish: nickel+pvd - pin variant: hollow pin - pin treatment: chrome hardened