3/4" (0.7500") cutting diameter with majority having 3/4" (0.7500") shank diameter. Made in the USA from solid carbide and cobalr high speed steel (HSSCo) End Mill Geometries: single end ball nose, single end square, corner radius, roughing, and drill mill. Cutting Edges: 2 flute, 3 flute, 4 flute, 5 flute, and 6 flute.