The SRAM GX Eagle 12 Speed 126L Chain is designed with Flowlink technology, PowerLock and Eagle Technology making it a superior chain in all the areas that matter. The Flowlink technology means that the inner-plates are utterly devoid of squire edges resulting in a chain that engages the cassette and chainring with far less friction resulting in quieter performance and better wearing. It can withstand greater angles thanks to its narrower overall profile. The PowerLock technology makes for tool-free precision installation which, along with Flowlink, also enhances overall strength.