SRAM XX T-Type Eagle HollowPin 12 Speed ChainSRAM XX T Type Eagle HollowPin 12 Speed Chain The first thing to know about the XX Eagle Transmission chain is that its the strongest we have ever made. Specifically engineered to optimize Eagle Transmission, this all new T Type design features a unique flat top, not only does this shape maximize shifting performance, but it also contemporizes the look of your super bike. Utilizes our longest wearing hard chrome finish and hollow pins. The XX Flattop