13-18T Bicycle Freewheel Single Speed Sprockets Parts for Fixed Bike Gear

13-18T Bicycle Freewheel Single Speed Sprockets Parts for Fixed Bike Gear Features: 【Durable, Resistant】: Constructed of high strength steel with galvanization processing, anti-, high performance of durability. 【Quiet Wheel】: Fluent turning movement without much noise. 【Operate Smoothly】: Inner thread is finished with high precision, which ensure close connection with the bike hub and smooth operation. 【Effortless Riding】: Providing fast riding speed with less effort needed. 【For Fixed Gear Bike Bicycles】: Usually applied for fixed gear bike bicycles. Specifications: Material: Carbon steel Color: Silver Height: 8mm Thickness: 3.1mm Locking ring inner diameter: 32mm Locking ring outer diameter: 42mm Freewheel Inner diameter: 34.8mm Freewheel size: 13T, 14T, 15T, 16T, 17T, 18T. Freewheel outer diameter: 57mm, 62mm, 66mm, 70mm, 73.6mm, 77.5mm Package Included: 1 x Bicycle Freewheel 1 x Locking Ring