Nobody applies constant, even force throughout the pedal stroke, which is why ROTOR sought to improve upon traditional round rings by creating its flagship oval Q-Rings. Round rings however, have a place in history and ROTOR wanted to complement its product range by offering round rings in addition to Q-Rings. 0% ovality noQ chainrings for your compact cranks offer the performance benefits inherent in round rings. Features: 100% CNC-machined, 7075-T6 aluminum alloy Steel shifting pins Designed to work with all 9, 10 and 11 speed groupsets Specifications:Color: NoNumber Of Teeth: 34, 36, 38, 39, 44, 46Bcd: 110 mmTechnologies: Alu7075, CNC, TryQQring Type: Inner, OuterCompatibility: NoDiscipline: Road, Triathlon