This is the SRAM Force eTap AXS Wide front derailleur. This derailleur is optimized for smaller X-Range chainrings on wide cranks and uses Yaw technology so there's no need for trim. Its wider position on the bike also provides clearance for extra wide tires, so you can venture far beyond the beaten path. Note: This derailleur does not include batteries and therefore must be purchased separately. FEATURES: Wireless electronic eTap shift logic for intuitive shifting, easy setup and reliability AXS enabled for easy personalization Additional clearance for 700 x 45c and 27.5 x 2.1” tires Crisp and accurate front shifts SRAM Yaw trimless cage technology optimized for use with 43/30T chainrings Designed for standard chainline eTap AXS cranks SPECS: Speed: 2 x 12 Speed Shifter Compatibility: SRAM eTap/AXS Shift Mechanism: Electronic (Wireless) Front Derailleur Style: Down Swing (High Clamp/Traditional) Max Chainring: 43T Derailleur Capacity: 13T Chainstay Angle: 61 - 66° Color: Black