HSS step drill with deburring zone for a better circular cut TiAlN coating, for particularly tough materials For burr-free drilling and planing sheet metal, pipes and profiles Two-sided deburring in one move No centre-punching necessary, drill bits do not run Constant cutting angle during the whole process Suitable for construction steel, CrNi steel and non-ferrous metals up to 6 mm thick Diameter specification is lasered on every level Three-faced driving shaft, prevents slipping in the drill chuck
