Introducing the new one-piece oval Direct Mount with OCP Mount. OCP Mounts patent-pending, proprietary technology allows the oval ring to be adjusted in 1-degree increments for optimized pedaling biomechanics. 12.5% ovality heightens the performance advantages of oval chainrings; no other oval chainring in the growing oval chainring category offers the adjustment options plus unique ovality all aimed at improving pedaling performance. Weight: 92g for 40t, 138g for 50t.