Stupňový vrták spirální drážka 4-20mm

Step drill with spiral flute

• HSS step drill with deburring zone for a better circular cut
• 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