Ruko produces the 101051E step drill bit, a versatile tool made of high-speed steel. It measures 4 to 20 mm in size, with a total length of 75 mm, and features a quick-helix design. It is ideal for drilling into sheet metal. https://elecena.pl/product/28443635/ruko-101051e-step-drill-bit-4-20mm-hss-co-5-high-cutting-performance 2025-04-16 https://elecena.pl/product/28443635/ruko-101051e-step-drill-bit-4-20mm-hss-co-5-high-cutting-performance 2026-06-11 https://elecena.pl/product/28443635/ruko-101051e-step-drill-bit-4-20mm-hss-co-5-high-cutting-performance 2026-07-04 https://elecena.pl/product/28443635/ruko-101051e-step-drill-bit-4-20mm-hss-co-5-high-cutting-performance 2026-08-20