New trends in smaller chainrings – plus a motive to craft a lighter oval chainring for mountain bikes, resulted in Direct Mount Q-Rings. The simplified one-piece design saves approximately 40 grams compared to standard ring+spider+bolts combination (for example, weight savings for a 32t ring is 40g). By machining our direct mount chainrings from a single piece of aluminum, in addition to trimming weight, rigidity gets improved by orienting the aluminum’s unidirectional fibers to take maximum advantage of their properties. Features: 100% CNC-machined, 7075-T6 aluminum alloy Semi-Aero design: reinforced rigidity and aerodynamics Wide - narrow technology: Specially design for one ring OCP Mount technology: Fine adjustment for OCP positions Designed to work with all 9, 10 and 11 speed groupsets Compatible with ROTOR RHAWK & RRAPTOR cranksets Direct Mount configuration: Without spider and chainring bolts Specifications: Weight: 67g per 30T Sizes: 34, 32, 30, 28, 26