GUB 11T 12T 14T Bicycle Rear Derailleur Pulley MTB Road Bike Rear Derailleur Pulley Roller Idler Bearing Jockey Wheel

Product: GUB bike Jockey Wheel
Condition: 100% NEW
Material: AL7075 CNC 
Bearing: steel bearings
Teeth: 11T/12T/14T optional
Weight: Approx 10g/12g/13g

Inner diameter: 6mm(compatible 4/5mm)

Color: Black, Red

Application: fit for 7/8/9/10speed

Package: 1pcs jockey wheel