Titanium HSS step drill bit set for burr-free drilling and reaming of metal sheets, pipes and profiles, in plastic case. 1 each of 4-12/4-20/6-30-mm drill bits. Area of use: Steel, Cr-Ni steel, non-ferrous metals, acrylic glass and plastic up to a wall thickness of 5 mm. Step drill with spiral grooves (DBGM), chamfer-planer deburring zone (DBGM), ROTASTOP comfort shank and high-quality TiAlN coating for dry machining. https://elecena.pl/product/17884940/07024-tialn-hss-step-drill-bit-set-4-30-mm 2021-04-26 https://elecena.pl/product/17884940/07024-tialn-hss-step-drill-bit-set-4-30-mm 2021-10-21 https://elecena.pl/product/17884940/07024-tialn-hss-step-drill-bit-set-4-30-mm 2022-10-15 https://elecena.pl/product/17884940/07024-tialn-hss-step-drill-bit-set-4-30-mm 2024-02-21 https://elecena.pl/product/17884940/07024-tialn-hss-step-drill-bit-set-4-30-mm 2025-02-05 https://elecena.pl/product/17884940/07024-tialn-hss-step-drill-bit-set-4-30-mm 2025-04-20 https://elecena.pl/product/17884940/07024-tialn-hss-step-drill-bit-set-4-30-mm 2026-02-01 https://elecena.pl/product/17884940/07024-tialn-hss-step-drill-bit-set-4-30-mm 2026-02-17 https://elecena.pl/product/17884940/07024-tialn-hss-step-drill-bit-set-4-30-mm 2026-06-27