Dremel 9903 Cutter, 1/8 in. D, 1-1/2 in. L, 1/8 in. D Shank, Tungsten Carbide

A high-speed cutter made of tungsten carbide, the hardest material next to diamond

Use higher speeds for hard woods, slower speeds for metals and very slow speeds for plastics

Use the sides of the cutter rather than the tip for effective cutting