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Drill bit set GRAPHITE step cylindrical 4–32 mm (57H740) multiple step holes
Summary description:
GRAPHITE step cylindrical drill bit (MPN 57H740) provides stepped drilling diameters ranging from 4 mm to 32 mm as listed. Designed for creating holes of multiple sizes without changing tools, it is suited for sheet metal, thin plastics and similar materials where stepped hole profiles are required. Features a cylindrical shank and progressive step geometry for sequential cutting and hole enlargement.