- Condition and quality - Brand new, high-quality replacement component built to deliver reliable, factory-level performance. - Precision machining for consistent performance - CNC machined precision tooth pattern provides accurate, repeatable tooth geometry for improved chain engagement and smoother pedaling. - The precise machining helps minimize chain wear and reduces the chance of chain skipping or misalignment. - Compatibility and fit - Designed to pair with a matching chainring that uses a square hole mounting interface (matching chainring with square hole). - Suitable as a direct-fit replacement where square-hole chainring compatibility is required. - Smooth, quiet operation - Sealed bearing construction prevents contamination from dirt and moisture, delivering quieter rotation with no unusual noise. - Sealed bearing reduces routine maintenance and helps maintain consistent performance over time. - Practical benefits - Improves drivetrain feel and reliability through precise tooth engagement. - Reduces noise and maintenance needs with sealed bearings. - CNC machining enhances durability and dimensional accuracy for dependable fit. - Typical applications - Replace worn or noisy components on bicycles that use square-hole chainring mounting. - Upgrade a commuter or fitness bike to improve pedaling smoothness and reduce drivetrain noise. - Keep as a spare part for bike maintenance or for use by repair shops servicing square-hole chainring systems. Specifications to note - Condition: Brand new - Machining: CNC machined precision tooth pattern - Mounting compatibility: Matching chainring with square hole - Bearings: Sealed bearing for quiet operation and reduced maintenance If you need help confirming fit with your specific crank or chainring, compare the square-hole mounting pattern on your existing part to ensure compatibility.