Mountain Bike Rear Derailleur Wheel 11T Metal Ceramic Rear Wheel Roller Bike Accessory

Improve Riding Experience: A variety of colors are available to meet different preferences and effectively improve the riding experience. Reduce Friction: The bearing adopts the ceramic bearing process, which greatly reduces the friction strength, and the self lubricating system has good lubrication performance. Reduce Chain Drop: en the tooth marks, reduce the chain drop and the tooth wheel, which can effectively reduce the chain drop and make the winding more stable. Item Type: Rear Derailleur Wheel Material: Metal ceramic Diameter: Approx. 4.2cm Celsius 1.65in