read the AI spiel if you want. it's a brand new rival derailleur, still in the box it was delivered in. Not in SRAM packaging. battery not included Upgrade your cycling experience with the SRAM Rival eTap AXS D1 12-Speed Rear Derailleur, meticulously engineered for seamless performance on road and gravel bikes. This medium cage derailleur is crafted from a robust combination of aluminium and alloy, ensuring durability and a crisp, responsive shift with every pedal stroke. Finished in an elegant black, the derailleur bolt-on mounting type provides a secure and streamlined fit to your bike. Designed with 12-speed compatibility, this single item upgrade will seamlessly integrate with your existing setup, enhancing your riding with precision and reliability.