1.SPECS - 1/2' Cut Diameter | 1/2' Shank | 1-1/4' Cutting Length | 4' Overall Length | Down Cut | 2 Flute | Solid Carbide | Flush Trim | Twin Bearing | Spiral Router Bit | Made 2.SOLID CARBIDE - This spiral flush trim 1/2' router bit is made from solid carbide. We use state-of-the-art CNC grinding equipment, highest quality solid carbide blanks and ultra-fine grinding wheels to produce our American-made router bits. 3.DOWN-CUT SPIRAL GEOMETRY - The 1/2 inch flush trim router bit down-cut flutes push chips down and away from the router, keeping the top surface smooth. They're the choice for plywood and composite materials like MDF. 4.TWIN BEARING PILOT - The 1/2 shank router bit is great for flush trimming and can handle tight corners really well. It uses a twin bearing pilot that follows your project template leaving surfaces needing minimal sanding.