SRAM XO 10spd Rear Trigger Shifter 2011: Rear shifter is specific to SRAM Exact Actuation ratio 10-speed mountain (and road) rear derailleurs. Zero Loss Travel for super-precise shifting action. Pull lever angle and clamp-position adjustable for custom ergonomics. Stand-alone design to allow use with various brake options (also upgradable to Avid MatchMaker or MatchMaker-X bar-mount integration). Composite and CNC-alloy construction with stainless steel hardware. Includes stainless steel cables with on-the-bar cable change ability.