Got a lot of wear from use, has life still left in it,

The SRAM XX1 X-Actuation 12 Speed Rear Derailleur in black is a high-performance component designed for cyclists looking to enhance their bike's functionality. With its precise engineering and reliable brand reputation, this rear derailleur ensures smooth and efficient gear shifts for a seamless riding experience. Ideal for serious cyclists seeking top-tier performance, this derailleur is a must-have for those looking to tackle challenging terrains and speeds with confidence.