Adjustable Lightweight Aluminum Alloy Bike Bottom Axle Huawei Precise Cutouts: The case features

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Adjustable Lightweight Aluminum Alloy Bike Bottom Axle Huawei Precise Cutouts: The case featuresMaterial: Made of lightweight and durable aluminum alloy for better toughness and weather resistance Adjustable: Features fine tuning washer for adjusting the distance of the chain center line of the crank disc Secure Fit: Hollow screw in axle with thread lock for enhanced lateral stability, preventing loosening and abnormal noises Sealed Bearing: Equipped with sealed bearings for waterproof and rustproof performance Application: Suitable for 68 73mm