Bicycle Axles ZTTO BB91 Bearing Bottom Bracket Screw Type 68/73 mm MTB Road Bike Waterproof CNC Alloy BB red

Description

Made of nylon plastic + aluminum alloy material,wear resistant, sturdy and corrosion resistance. Ergonomic design, make you easy and comfortable to use. Easy installation without additional adjustment. Products can be installed and use without modification, easy to install, no installation instructions. Useful accessory for bike lovers on DIY bikes.