11V rear derailleur compatible with direct mount Shimano Grx RD-RX817

Quiet, uninterrupted rear shifting on rough terrain "Adjustable chain stabilizer prevents chain slap and jump -Rear derailleur SHIMANO SHADOW RD+・Smooth, reliable shifting on a variety of surfaces "Activation/deactivation of stabilizer switch depending on terrain "Clutch tension adapted to Gravel・Compatible with current DUAL CONTROL road levers・Small sprocket: Max. 11T/Min. 11T min.・Large sprocket: Max. 42T/Min. 40T・Total capacity: 31T