HSS step drill with straight tap, two-edged For burr-free drilling and planing sheet metal, pipes and profiles No centre-punching necessary, drill bits do not run Suitable for construction steel, CrNi steel, non-ferrous metals, Plexiglas, plastics and wood up to 6 mm thick Diameter specification is lasered on every level Three-faced driving shaft, prevents slipping in the drill chuck Sets delivered in a plastic case