Carbon-Ti X-MonoSync, ultralight monoring with synchronized teeth, grade 5 titanium CNC made, compatible with 9-10-11-12 speed drivetrain (Sram Eagle included).  Available in 104 bcd or 76 bcd 4 holes fixing , or with direct engage for Sram/Truvativ, Specialized S-Works and Hollowgram cranks with 28T - 30T - 32T - 34T - 36T. Weight from 33 gr.