Ceramic Guide Pulley: Ceramic bearing can reduce drag force, super lubricating, noiseless, There is no strange sound, fast, smooth, no noise, supports various speed changes, and is more practical to use; Package List: 1 x Rear Derailleur, 2 x Sleeve Tubes
Application: Light weight, small size, easy to carry and store, 16T bicycle aluminum alloy rear guide pulley can be installed with 4/5/6mm size axle. The bike rear derailleur pulley fits almost all mountain bikes and road bikes
Great Cycling Accessory: Positive and negative tooth guide wheel can effectively inhibit the horizontal swing of the chain, bike guide roller makes the speed change smoother and faster, and at the same time reduces the chance of chain drop
Quality Material: This bike rear derailleur pulley is made of quality aluminum alloy and ceramic material, colorful appearance, stable performance, anti-rust and anti-corrosion, high reliability and exquisite workmanship, a long service life
Easy Install: The derailleur pulley set are easy to install with an allen key by simply removing the screw that holds the pulley to the derailleur. Do not over-tighten because it would increase friction with the rear derailleur reducing the bike wheel performance