features:-change of long box. -reliability and tolerance. -ease of configuration and adjustment. -x-actuation technology: it eliminates the decanting and the variation in exchange for precise and reliable performance. -technology direct route: path from cable connected directly to the drive mechanism. -less friction and effort. -greater thrust in one motion. -material: aluminium. -speed: 8-7. -max ratio: 36 teeth. -compatibility: exact actuation ratio, 9-speed, maximum 36 teeth. -weight: 295 gr.