Rear Derailleur Pulley, 12T/14T Aluminum Alloy Jockey Wheel Ceramic Guide Pulley Bike Guide Roller Wheels for Road Bike, Mountain Bike, MTB, BMX (14T,Black) - Yundxi

• Sturdy Material: Bicycle rear derailleur pulley is composed of high quality aluminium alloy and ceramic, with high strength and wear resistance, good performance, ceramic material can reduce resistance and long service life. Reducer Sleeve: With A Reducer Sleeve, the Compatibility Is Stronger. The Original Diameter of 6mm Can Be Converted to 4/5mm Through the Reducer Sleeve, and the Rotation Is Flexible. Lightweight & Easy to Carry: Our bicycles rear guide wheel is lightweight, so it will not bring for additional burden to the bicycles. You can carry it with you in the cycling timing for easy replacement. Suitable for: It is very suitable for 12, 14-teeth bicycles. It can be used for chain transportation and variable speed. Install it on your bicycles to make you more ease when riding a bicycles. And adapt to the bike speed: 8/9/10/11 speed.