1、HIGH STRENGTH MATERIAL: It is made of high strength carbon steel with excellent durability, able to withstand high strength usage environment to ensure stability and durability. 2、HIGH ACCURACY INTERNAL THREAD: It adopts high accuracy internal thread design, which can ensure smooth rotation, enhance riding comfort and easy maintenance. 3、COMPACT 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. 4、EASY 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. 5、WIDE COMPATIBILITY: The freewheel has wide applicability and is compatible with standard threaded bicycle rear hubs for single speed bicycles or tricycles. Item Type: Single Speed Bike Freewheel Material: Carbon Steel Weight: Approx. 161g / 5.7oz 1 x Single Speed Bike Freewheel