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Sanmum 2 Pieces 24mm Bike Mid-Axle BB Bottom Bracket Protection Cap Bearing Shell Cover Dustproof Cover for MTB Mountain Road Fixed Gear Bicycle Parts - SA0120225402291
Sanmum SA0120225402291
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Made of engineering plastic, smooth surface, good hand feeling, waterproof, dustproof, corrosion-resistant and wear-resistant. Suitable for bearings with an inner diameter of 25MM and crank shafts with an outer diameter of 24MM. Waterproof and dustproof to improve bearing life. Without use tools, press manually and install it, it is very convenient, after the crank is locked, there will be no slack. Do not press all the force directly, this will cause damage to the protective cover.
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