2-way release lever is unique to Shimano & allows shifting from various riding positions allowing you to shift with either your thumb or index finger. The self contained pod design allows the Deore M610 Shifters to be compatible with any brake lever & comes with a multi-position adjustable handlebar clamp for custom lever positioning. Barrel adjuster allows fine tuning mid ride & comes complete with inner & SP41 outer cables. An easy access clamp band adjustment allows quick set up.