Feature:1. It has a smoother speed change, reduced perforation weight, and strong compatibility.2. Mainly made of high quality steel material, it has high strength, sturdiness and durability.3. With the features of high temperature resistance, rust prevention, no deformation, wear resistance and so on.4. Highprecision tooth outline for precise positioning. Simple structure, it is easy to screw into the hub, easy installation and use.5. Suitable for mountain bikes and folding bicycles, for hybrid bike, city bike, beach crusier bike and so on.Specification:Item Type: Threaded FreewheelMaterial: SteelProduct Color: As Pictures ShownProduct Weight: Approx. 535g / 18.9ozSpeed: 7 speedNumber of Teeth: 14-16-18-20-22-24-28T.Package List:1 x FlywheelNote:After the installation is complete, check whether the flywheel is locked and whether it is aligned.