SRAM XX Eagle T-Type Flattop Chain - 12-Speed 126 Links Hollow Pin Includes PowerLock Connector PVD Coated SilverSRAM XX Eagle T Type Flattop Chain 12 Speed 126 Links Hollow Pin Includes PowerLock Connector PVD Coated Silver. The first thing to know about the XX Eagle Transmission chain is that its one of the strongest SRAM has ever made. Specifically engineered to optimize Eagle Transmission this all new T Type design features a unique flat top shape that maximizes shifting performance. The chain features a hollow pin design and is finished in a long wearing