National Jet Company also manufactures our own micro tooling. We manufacture spade drills, as well as reamers, broaches and punches. We offer diameters as small as .0005’’ (12.5µ), and we make tooling to any size within .0001’’. Tolerance on our drills is +.0000’’, -.0001’’. Tooling larger than .001’’ diameter is typically made with a flute length that is 7 times the diameter of the drill. (In some instances, we can offer tooling with longer length to diameter ratios.) We make tooling from either carbide or high speed steel.