- Compatibility and fit: Bicycle chain ring suitable for most 110/130 BCD cranks. Please confirm your crank BCD and number of teeth specifications before purchasing. - Material and design: Aluminium alloy narrow-wide chainring with alternating tooth profiles to help prevent the chain from falling off under load, providing strong engagement and reliable power transfer. - Size options and splines: 110/130BCD; Splines: 36T 38T 40T 42T 44T 46T 48T 50T 52T 54T 56T 58T 60T. - Safety and performance: Precision machined for a safe, efficient design suitable for high intensity cycling. Features extended plus or minus tooth shapes to improve chain engagement and performance. - Use scenarios: 1) Road or commuter bikes upgrading a 110/130 BCD crankset to improve chain retention and compatibility with multiple gearing options. 2) Mountain bikes or hybrids using a narrow-wide design to reduce chain drop on rough terrain and during aggressive riding. 3) Time trial or performance cycling where reliable chain engagement and smooth power transfer are important for consistent cadence.