SRAM "Force 1" 11-speed rear derailleur, X-Horizon, Type 3. The cage is made of aluminum. Roller Bearing Clutch technology regulates chain tension. Cage Lock feature locks the cage for easy wheel removal. Thanks to the Cage Lock technology in the derailleur, removing and installing the rear wheel as well as mounting the chain is faster and easier than ever. Simply push the cage forward to release the chain tension and lock it in place. • Application: Road • Compatibility: 11-speed • Mounting type: Frame mount • Material type: Aluminum • Number of speeds: 11-speed derailleur cage • Design: Long • Derailleur capacity: Long • Max. largest sprocket: 42 teeth.