Features： 1、Steel Plate: Adopts high tension steel plate with nickel chromium plating and multi layer electroplating anti rust treatment, able to ensure a long term use. 2、Smooth Running: Has fluent rotation without much noise, able to ensure close connection with the bike hub, stable running for a satisfying using experience. 3、Powerful Tool: High accuracy gear ratio makes gear shifting more fluent, also uses punching design to reduce weight, improving your using experience. 4、Detail Description: Cassette cogs is 11‑12‑13‑15‑17‑19‑21‑23‑25‑28T, and is 10 speed type. Has strong compatibility for many bikes. 5、Suitable Model: Ideal replacement for the original old or damaged part, suitable for road bikes to use, for better performsnce or higher strength. Specification： Item Type: Bicycle Freewheel Material: Nickel Chrome Steel Color: As Picture Shown Application: For Road Bicycle  Gross Weight: Approx.329g/11.6oz Speed Ratio: 10 Speed, 11-12-13-15-17-19-21-23-25-28T Package List： 1 x Freewheel 2 x Tooth Slice 1 x Deadlock Cover