road mountain guard guide derailer index gear

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Description:

Made of aluminum alloy material, anti-rust and anti-corrosion, lightweight and durable.
High rigidity ceramic bearing, super smooth and noiseless.
Fits for almost bike of 16T, suitable for use 4/5/6 wheel screws.
Easy installation. Necessary accessories for your .
This bike guide roller pulley can reduce drag and improve cycle efficiency, offers you a better experience.

Specification:

Material: Aluminum Alloy + Ceramic Bearing
Diameter: 63mm/2.48 inch

Package Includes:

1 Piece Bike Jockey Wheel
1 Piece 4mm Installation Hole Adapter Tube Sleeve
1 Piece 5mm Installation Hole Adapter Tube Sleeve(Assorted Quatity for You Choose)

Note:

1. Due to the light and screen difference, the item's color may be slightly different from the pictures.
2. Please allow 1-3mm differences due to manual measurement.

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