Description:

Made of quality aluminum alloy, which is sturdy, durable and makes the derailleur pulley anti-rust, and corrosion resistant, so it can be applied for a long time
The inner ceramic bearing is ultra-light and has high lubricity, which can ensure its smooth operation.
Positive and negative tooth guide wheel can effectively avoid the horizontal swing of the chain, so that the speed is more accurate
Suitable for most bikes of 11T, and can ensure their normal working
A good necessary tools for bikes, the pulleys spin very freely and have low friction!

Specification:

Material: aluminum alloy
Size(LxWxT): 4.2x4.2x0.5cm/1.7x1.7x0.2inch bolts: 5mm

Package Includes:

2 Pieces Bike Jockey Wheel