2PCS 11T Bicycle Rear Derailleur Pulley Jockey Wheel Aluminium Alloy Guide Wheel Bike Derailleur Accessories Guide Roller Part for Mountain Road Bikes Bicycles(Green)

Anodized CNC machined bicycle wheel with fully rubber sealed bearing for center bolt derailleurs. Fits for most of rear derailleur on the market support 7/8/9/10 speed.If you need it will be your best choice. Wish you a happy life!Features:1. It is made of CNC aluminum alloy lightweight and durable.2. Anti rust and corrosion resistant anodized.3. Apply for most of rear derailleur on the market support 7/8/9/10 speed.Specifications:Material: 7005 Aluminium AlloyComponents: DerailleursStructure: Ceramic BearingsColor: Red/Black/GreenSize: 11TUse: For 7/8/9/10 speedDiameter: 11T-40mmQuantity: 2pcsFit For: For 4/5/6mm roller screw axisPackage Included:2 Pcs Ceramic Bearings.