Precise cassette cog compatibility Fully compatible with 8/9/10/11speed drivetrains, this general cassette cog delivers smooth, reliable gear transitions on road bikes across varied terrains. Long lasting steel construction Made from robust steel, this sprocket freewheel cog resists wear and tear to provide a long service life and dependable power transfer during intense cycling. Convenient tooth options available Available in 11T, 12T or 13T to match your riding style, enabling cadence control and efficient pedaling for climbing and sprinting scenarios. Easy maintenance design Silver finish resists dirt buildup, helping the cog stay cleaner longer and simplifying cleaning while maintaining smooth operation ride after ride. Practical applications Allaround road riding and mixed terrain training: balanced gearing with 12T for steady, reliable performance on varied surfaces. Climbingfocused rides: the 13T option provides easier cadence and smoother power delivery on long or steep climbs. Speedfocused sprints and flats: the 11T option supports higher cadence and quick, responsive acceleration for fast sections.