Features: Constructed of high strength steel with galvanization processing, anti-corrosion, highperformance of durability. Fluent turning movement without much noise. The inner thread is finished with high precision, which ensure close connection with the bike hub and smooth operation. Providingfast riding speed with less effort needed. Usually applied for fixed gear bike bicycles. Specification: Condition: 100% Brand New Material: Steel Color: Shown as pictures Type Options: 13T, 14T, 15T, 16T Whole Diameter: Approx. 56mm / 2.2in(13T), 62mm / 2.4in(14T), 66mm / 2.6in(15T), 70mm /2.7in(16T) Weight: Approx. 50 - 70g Packing List: 1 x Bike Freewheel 1 x Locking Ring *Other terms on pictures are not included. 1Constructed of high strength steel with galvanization processing, anti-corrosion, high performance of durability. 2Fluent turning movement without much noise. 3The inner thread is finished with high precision, which ensure close connection with the bike hub and smooth operation. 4Providing fast riding speed with less effort needed. 5Usually applied for fixed gear bike bicycles.