Promisen New 11Tooth MTB Aluminium Bearing Jockey Wheel Pulley Road Bicycle Bike Derailleur;

Features:
Type: 11 Gear Guide Pulley
Color:Purple,Black,White,Blue,Red,Yellow
Material: Aluminium
Size: 5mm (D)
Net Weight: 9.8g
Inner diameter:about 5.2mm
Note:
1.Transition: 1cm=10mm=0.39inch
2.Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.
3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!
Package Includes:
1 x Wheel Rear Derailleur Pulley (11T)