SRAM RED AXS Rear Derailleur Inner Cage - Carbon, Includes Titanium Screws, E1SRAM rear derailleur cage assembly parts for rebuilding SRAM rear derailleurs. Carbon inner cage with titanium screws included Compatible with SRAM model: RD RED E E1 Item Specifications Cage Length Medium Defined Color Black Drivetrain Speeds 12 Fits Brand SRAM Fits Model RD RED E E1 SRAM Rear Derailleur Cage Assembly Parts Cage Assembly UPC: 710845911408