1、PREMIUM MATERIAL: The bicycle freewheel chain kit is made of high quality steel, it is robust, corrosion resistant and has a long service life. 2、WELL MADE: High accuracy internal thread, ensure tight connection with bicycle hub, stable operation. 3、HIGH QUALITY: The bike freewheel kit is made of high quality forging process for hardness and no deformation. Provides maximum power transmission and long life. 4、WIDELY USED: The bike freewheel kit is suitable for converting bikes, go karts, beach bikes, mini scooters etc. 5、EASY TO INSTALL: Freewheel lightweight and compact. Easy to be removed or installed by freewheel tools. Item Type: Bike Freewheel Kit Material: Steel 16 Tooth Flywheel Size: Inside Diameter: Approx. 35mm/1.4in Outer Diameter: Approx. 70mm/2.8in Flywheel Tooth Number: 16 1 x Flywheel 1 x Sprocket 1 x Chain