Each chainring can be disassembled, which is convenient for replacement and reduces maintenance costs. Crank and Chainring Made of aluminum alloy, light weight, stylish, high axial strength and compatibility. Internal weight reduction design makes the crank weight lighter and will not add burden to your riding. Compatible with most mountain bikes and dirt bicycles. Manufactured from high-quality aluminium alloy, offering high strength, light weight and durability. Ideal for bicycle repairs and upgrades, compatible with a wide range of models, Manufacturer: OPFdfhDFH