- Tooth thickness is engineered to work seamlessly with both inner and outer chain links, helping your bike ride smoothly while reducing friction and noise. - The chainring uses a narrow-wide tooth profile in an aluminum alloy construction with alternating positive and negative tooth shapes to help prevent chain drop and handle strong torque. - Compatible with most 110/130 BCD cranksets. Before buying, please confirm your crank’s BCD and the number of teeth specifications. - Safe and efficient design: built with integrated machining for durability and reliable performance on longer rides. The extended plus or minus tooth profiles improve chain engagement and overall function. Use scenarios - Mountain or off-road riding where the chain may encounter uneven surfaces. The narrow-wide design helps keep the chain engaged and reduces the chance of derailment and noise on rough trails. - Road cycling or urban commuting with mixed terrain. The chainring provides reliable power transfer with smoother, quieter operation during shifts and climbs. - Endurance rides or long-distance cycling. Durable aluminum alloy construction and optimized tooth profiles support steady performance over extended periods and varying riding conditions.