The last 2 sprocket positions and lock ring are made of AL7075-T6 Aluminium, giving reduced weight with greater strength. Shimano Fit. Shimano CS-HG200 - 9 Speed Cassette - 11-32 / 34 / 36. SunRace CSMZ800 Wide Ratio Cassette - 12 Speed - SILVER - 11-51.
