Step twist drill bit

Step drill bit HSSE-Co 5, spiral-fluted, with a cross-ground point. The step drill bit with specially developed FLOWSTEP® technology allows a smooth transition from one diameter to the next. Each individual step has a specially designed notch which, once each step has been drilled, smoothly and in a controlled way guides the step drill bit on to the next stage. This ensures a noticeably smoother and quieter drilling process. The deeply ground, spiral-shaped flute ensures extremely smooth operation and high cutting performance. Unbroken chips are cleared particularly cleanly, just as with a twist drill bit. As a result, less built-up edge and cold welding forms on the cutting edges. The taper makes it easier to withdraw the bit when drilling through sheet metal.