<p><strong>HSS TiAlN step drill bit</strong> with drilling diameter <strong>from 4 to 39 mm</strong>. Designed for drilling in non-ferrous metals, steel sheets and plastics.</p><br/><p>The drill bit is made of HSS high-speed steel with increased cutting ability and wear resistance. Coated with TiAlN (titanium aluminum nitride).</p><br/><p><strong>The drill bits coated with a TiAlN layer</strong> are intended in particular <strong>for machining difficult-to-cut materials</strong> and wherever the drill will be subjected to high heat loads due to the lack of coolant or limited coolant supply.<strong> This coating significantly improves the wear resistance of the drill bits and allows to increase the cutting speed.</strong></p><br/><p>The drill is packed in a plastic container with a hole for hanging on a hook.</p><br/><h4>Technical data</h4><br/><table style="width: 370px;"><br/><tbody><br/><tr><br/><td style="width: 161.75px;">Type</td><br/><td style="width: 192.25px;">Step drill</td><br/></tr><br/><tr><br/><td style="width: 161.75px;">Material</td><br/><td style="width: 192.25px;">HSS steel</td><br/></tr><br/><tr><br/><td style="width: 161.75px;">Layer</td><br/><td style="width: 192.25px;">TiAlN&nbsp;</td><br/></tr><br/><tr><br/><td style="width: 161.75px;">Chuck</td><br/><td style="width: 192.25px;">cylidrical</td><br/></tr><br/><tr><br/><td style="width: 161.75px;">Diameters [mm]</td><br/><td style="width: 192.25px;">4, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39</td><br/></tr><br/><tr><br/><td style="width: 161.75px;">Stepped</td><br/><td style="width: 192.25px;">every 2 mm</td><br/></tr><br/><tr><br/><td style="width: 161.75px;">Total length [mm]</td><br/><td style="width: 192.25px;">107</td><br/></tr><br/><tr><br/><td style="width: 161.75px;">Working length [mm]</td><br/><td style="width: 192.25px;">82</td><br/></tr><br/></tbody><br/></table>