Shimano Altus Front Rear Derailleur FD RD-M310 SGS Direct Mount Mech Black
Series: ALTUS series. Cable Pull: Dual Pull. Max different in front: 20 teeth. Weight: approx.308g. Min smallest sprocket: 11 teeth. Max smallest sprocket: 14 teeth. Min largest sprocket: 28 teeth. Max largest sprocket: 34 teeth.