Wytino Bicycle Cassette Cog,High Strength Steel Cog Road Bike Freewheel Parts for Fixed Gear(10 13T)

????【Corrosion-resistant & High Strength】: The Bike Freewheel Parts is constructed of high strength steel with hard chrome plating processing, sturdy, anti-corrosion, high performance of durability. ????【Smooth The Bicycle Cassette Cog inner thread is finished with high precision, which ensure close connection with the bike hub and smooth ????【Smooth & Speedy】: The Single-Speed Bike Freewheel will providing fast riding speed with less effort needed.Fluent turning movement without much noise.​ ????【For Mountain Bikes】---The Bicycle Freewheel is applicable to mountain bike freewheel, not applicable to highway freewheel. It is one of the best companions for mountain bikesReliable to use.​ ????【Guarantee】: We are determined to create a satisfying shopping experience. Unpleasant shopping is the most thing we won't want to happen. If there is any problem with the product, please feel to contact us,We will try our best to make your purchase satisfied.