Efficient Bike Jockeys Wheel Aluminum Alloys Noiseless Rear Derailleur Pulley for Rear Derailleur Systems

Adults. High collocation provide smooth shifting experiences and improves cycling efficiency. Consist of light weight aluminum alloys component, wear-resistant. Suitable for cycling enthusiasts and professional racers who love cycling. Efficient Bike Jockeys Wheel Aluminum Alloys Noiseless Rear Derailleur Pulley for Rear Derailleur Systems Features: High collocation provide smooth shifting experiences and improves cycling efficiency. Consist of light weight aluminum alloys component, wear-resistant. Suitable for cycling enthusiasts and professional racers who love cycling. Suitable for various cycling environment such as mountain and highway. Excellent performances in complex terrain, fashion appearances and rusts resistance. Specifications: Color: Five Elections Dimension: 4.1cm/1.61in Component: Aluminum Alloys Package Includes: 1pc ceramics Porcelains Guide Wheel note: 1. Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2. Due to