Features1HIGH STRENGTH MATERIAL: It is made of high strength carbon steel with durability, able to withstand high strength usage environment to ensure stability and durability. 2HIGH ACCURACY INTERNAL THREAD: It adopts high accuracy internal thread design, which can ensure smooth rotation, enhance riding comfort and easy maintenance. 3COMPACT AND LIGHTWEIGHT: Single speed bike freewheel is light in weight and small in size, which will not increase the burden of the bike and make it more flexible when riding. 4EASY INSTALLATION: Users can remove or install single speed bike freewheel by flywheel tool, which is easy and fast to operate. Users can easily finish the installation by themselves, which is convenient for maintenance and repair. 5WIDE COMPATIBILITY: The freewheel has wide applicability and is compatible with standard threaded bicycle rear hubs for single speed bicycles or tricycles.SpecificationItem Type: Single Speed Bike FreewheelMaterial: Carbon SteelWeight: Approx. 161g / 5.7ozPackage List1 xSingleSpeedBikeFreewheel