Demeras Bike Guide Wheel Aluminium Alloy Rear Derailleur Wheel Pulley for Mountain Bike Racing Bike 11T 13T(13T-Black)

【CNC ALUMINUM ALLOY MATERIAL】The pulley wheel is made of CNC aluminum alloy material, which is lightweight and Anti rust and corrosion resistant anodized.Works excellent, the ease of operation, the use safe 【FOR REAR DERAILLEUR】The rear derailleur pulley is used on rear derailleur for chain transportation and speed changing.Our bicycle pulley wheel suits for 8/9/10/11 speed rear derailleur. 【GOOD PERFORMANCE】Internal use of aluminum bearings, steel cage, lubrication performance, high strength.These pulleys run on smooth ball bearings.These pulley wheels will optimize your speed rear derailleur with reduced friction and extended service life. 【FOR 11T OR 13T】A necessary accessory for your bicycle.Fits for almost all mountain bike of 11T or 13T.Suitable for 4/5/6mm spindle shaft rollers.Good quality not only can provide a safer guarantee for your life,but also good materials can increase product life. 【GUARANTEE】If you are not satisfied with our product you received, you can send emails to us at any time. We will reply you instantly and help you solve your problem.