1. Material: aluminum alloy + steel bearing 2. Diameter: 11T about 41mm, 13T about 49mm 3. Specification: use 4/5/6mm shaft guide wheel 4. Weight: 8.8g for 11T, 13g for 13T 5. Features: steel bearing, waterproof and dustproof, super durability, multi-color cool, embellish the car, simple and convenient installation 6. Selection of guide wheels: - Try to choose the same size as the original guide wheel, there is no the same, you can choose a smaller one than the original guide wheel, but can not choose a larger one - The guide wheel and the tension wheel are not distinguished. Some rear derailleur original guide wheels and the tension wheel are different in size and can be replaced. The chain length needs to be adjusted.
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