Vortex End Mill 3 Flute Centre Cutting 30 Helix TiSiN Coated For 55HRC - 20mmThe Vortex End Mill is a high performance carbide cutting tool designed for precision milling in hard materials. With a 20 mm diameter, a 3 flute center cut design, and a TiSiN coating, its built for durability and versatile use in demanding applications up to 55 HRC. Diameter: 20 mm Flute Count: 3 flute design for efficient chip evacuation and balanced load Center Cutting: Yes enables plunge milling and contouring without retracting the tool Helix