- Tooth thickness is machined to work seamlessly with both inner and outer chain links, helping your ride run smoothly and reducing friction and noise. - Narrow-wide chainring design in an aluminum alloy provides alternating large and small teeth to prevent chain drops and deliver strong power transfer. - Compatible with most 110/130 BCD cranksets. Please verify your crank’s BCD and tooth count specifications before purchase. - Safe, efficient design with integrated machining for durability. Optimized for time trial cycling, with advanced plus/minus tooth profiles to improve chain engagement and overall performance. - Applications and use scenarios: - Road cycling and commuting: quieter, smoother operation with reduced chain drop risk on varied pavement. - Upgrading older drivetrains: improved chain retention and reliability during fast accelerations and rough sectors. - Time trial training and racing: enhanced chain engagement at high cadences for consistent shifting and power transfer.