FEATURES: Increased acceleration by reducing inertia and weight 100 point alloy plate ratchet system New smaller spline diameter for 10T top gear Quick engagement: 7.6 degree SPECS : ERD: 550-610 mm Rim offset: 0-3 mm Intersections: 3 cross only Hub Spacing: Brake/Compatibility : Center Lock Disc Cassette/Freehub Compatibility: MICROSPLINE (not compatible with standard HG cassettes) Speeds: 12-speed (also compatible with 11-speed CS-M9110 XTR Cassette) Spoke Compatibility: Straight-pull Flange Diameter: 51mm (Left); 68.4mm (Right) Weight: 231g