12T Road Bike Guide Roller Idler 6mm MTB Bicycle Rear Derailleur Wheel Pulley

Specifications:
It is made of good quality material, durable to use, which can offer you a better cycling experience.
The tooth profile is one thick and one thin, which is convenient to fill the chain gap and reduce the amount of chain ore to speed up the speed change.
At the same time, for the single disc system, it can reduce the chance of chain drop.

Item Name: Derailleur Pulley
Material: Aluminium Alloy, Ceramic Bearing
Installation Size: 4/5/6mm Axis
Features: Fine Workmanship, Durable, Easy to Install
Size: Diameter: 48mm/1.89", Aperture: 6mm/0.24" (Approx.)

Notes:
Due to the light and screen setting difference, the items color may be slightly different from the pictures.
Please allow slight dimension difference due to different manual measurement.

Package Includes:
1 x Derailleur Pulley
2 x Reducer