Anodized CNC machined bicycle jockey wheel with fully rubber sealed bearing for center bolt derailleurs. It runs on smooth ball bearings, and it’s a necessary accessory for your bicycle. There are three different colors for you to choose from, to meet different needs. Fits for most of the rear derailleur on the market, support 7/8/9/10 speed. Hope you will enjoy your cycling. Have a nice day.
1. Bike Jockey Wheel Pulley Made of CNC aluminum alloy, lightweight and durable.
2. Anti-rust and corrosion resistant anodized.
3. These pulleys run on smooth ball bearings.
4. A necessary accessory for your bicycle.
5. Apply for most of the rear derailleur on the market, support 7/8/9/10 speed.