HSS conical drill bit. Drill hole diameter: 40 - 61 mm Shank diameter: 12 mm Tenifer-treated for surface hardening through reduced cold welding. Burr-free drilling and reaming of metal sheets, pipes, steel profiles, Cr-Ni steel, non-ferrous metal, acrylic glass and plastic up to a wall thickness of 5 mm. The hole diameters are signed by laser in both grooves. The scale is legible when the tool is rotating. The three-sided tappet shank prevents "slipping" in the drill chuck. https://elecena.pl/product/18398330/25435-hss-conical-drill-bit-40-61-mm-tenifer-treated 2021-05-07 https://elecena.pl/product/18398330/25435-hss-conical-drill-bit-40-61-mm-tenifer-treated 2021-10-18 https://elecena.pl/product/18398330/25435-hss-conical-drill-bit-40-61-mm-tenifer-treated 2022-10-19 https://elecena.pl/product/18398330/25435-hss-conical-drill-bit-40-61-mm-tenifer-treated 2024-03-12 https://elecena.pl/product/18398330/25435-hss-conical-drill-bit-40-61-mm-tenifer-treated 2025-02-04 https://elecena.pl/product/18398330/25435-hss-conical-drill-bit-40-61-mm-tenifer-treated 2025-04-17 https://elecena.pl/product/18398330/25435-hss-conical-drill-bit-40-61-mm-tenifer-treated 2026-02-19 https://elecena.pl/product/18398330/25435-hss-conical-drill-bit-40-61-mm-tenifer-treated 2026-07-15