Mountain Bike Rear Derailleur Pulley 11T Rear Jockey Wheel Guide Roller Tension Wheel

Feature: 1. Ceramic Bearing Process: Bearings are ceramic bearings, which greatly reduces friction, self lubricating system, good lubrication performance, and improves riding experience. 2. Smooth Rotation: Ceramic balls are self lubricating and maintenance free, and at the same time, the transmission efficiency is higher, and the riding is labor saving. 3. To Reduce Chain Drop: The deep tooth guide wheel can effectively reduce the chain drop, the speed change is crisp, and the winding is more stable. 4. Excellent Design: Metal ceramic bearing rear derailleur wheel, metal bearing, ceramic ball, CNC iron cutting, anodizing, anti corrosion and wear resistant. 5. Reducer Sleeve Compatibility is Better: Riding without the chain, suitable for 8, 9, 10, 11 speed rear derailleur, the outer Diameter of the installation shaft is compatible with 4mm, 5mm, 6mm. Specification: Item Type: Bicycle Rear Derailleur Pulley Material: Metal Ceramic Weight: Approx.10g 0.4oz Size: Diameter: Approx. 4.2cm 1.7in. Package List: 1 x Guide Wheel2 x Reduction Sleeve