LMT Onsrud 62-727 Solid Carbide Downcut Spiral O Flute Cutting Tool, Inch, Uncoated (Bright) Finish, 21 Degree Helix, 1 Flute, 3.0000" Overall Length, 0.2500" Cutting Diameter, 0.2500" Shank Diameter
Designed to provide a smooth finish in hard plastics with downward chip removal. Use for acrylic, nylon, PVC, polycarbonate and solid surface.