The SRAM Rival eTap AXS Rear 12-Speed Derailleur is designed to perform on any terrain and in any drivetrain setup. It ensures smooth and quiet rides with its secure chain management and precise shifting. Features Wireless electronic eTap shift logic for intuitive and reliable shifting Compatible with both 1x and 2x drivetrains Handles a 36t cog max, suitable for 10-28, 10-30, 10-33, and 10-36 cassettes SRAM AXS™ enabled for easy customisation Chain management keeps the drivetrain quiet and secure X-SYNC pulleys enhance durability and efficiency Specifications Speed (RD): 12s Cable pull ratio: n/a Cage (RD): n/a Max tooth: 36 Colour (RD): Black Pulley bearings material: Steel Cage material (RD): Aluminium The SRAM Rival eTap AXS Rear 12-Speed Derailleur is a reliable choice for cyclists seeking performance and adaptability.