Item Descriptions:
-17T Bike ceramic jockey wheel is compatible with most of rear derailleur of 7/8/9/10/11/12 speed.
-The derailleur pulley is lightweight and has a compact size. Fit for 4/5/6 mm shaft.
-Made of aluminium alloy, which is lightweight and durable. It can also reduce resistance, which can improve efficiency when cycling.
-The ceramic inner bearing, specially designed for cycling, has minimal friction that significantly improves performance thanks to a much smoother transmission.
-These derailleur pulley set are very easy to install with an allen key by simply removing the screw that holds the pulley to the derailleur.

Package:
1x Bicycle Rear Derailleur Pulley
2x Sleeve

Item Specifications:
Colour:Black/Red
Teeth:17T
Diameter:69mm
Material:Aluminium Alloy, Metal Bearing