Specifications: 12 Speed New Grip Shift Mechanism takes SRAM's original invention to an increased level of precision and durability Better feel and added toughness Compatibility: 12 Speed Recommended Group: X01 Eagle Finish: Anodized Aluminum Material: Composite and Aluminum Hardware: Clamp included Jaws: Once the Grip Shift shifter and grip interlock securely, forged aluminum clamps on either end reinforce the assembly by locking tightly to handlebar. Rolling Thunder: Three rows of ball bearings provide zero friction or play reducing the force needed to shift and promoting long-term performance under all weather conditions with Grip Shift. Speed Metal: Full metal indexing keeps shifting crisp and precise with Grip Shift X-Actuation: Developed specifically for SRAM 1x, X-ACTUATION keeps shifting sharp and consistent across the entire cassette.