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Step Drill Bit GRAPHITE 57H739 cylindrical steps 4–22 mm set (4,6,8,10,12,14,16,18,20,22 mm)
Summary description:
Step drill bit by GRAPHITE, model 57H739, featuring cylindrical stepped cutting profile covering diameters from 4 mm to 22 mm in incremental steps (4, 6, 8, 10, 12, 14, 16, 18, 20, 22 mm). Designed for drilling and enlarging holes in sheet metal, plastic and thin materials. Suited for hand drills and drill presses where multiple sizes are needed without tool changes.