Step Drill Bit 4-20mm.
With 9 steps, suitable for drilling steel, wood & plastic. High speed steel step drill bit features a self starting point. ... starts at 4mm, then steps up through 6, 8, 10, 12, 14, 16, 18, 20. Ideal for drilling larger holes in thin materials, especially stainless steel. Excellent for hole enlargement.
Whether it's steel stud framing, switchboards, plastic sheet or stainless steel, this is an ideal tool for 1st and 2nd fix plumbers, electricians or Hvac installers.
Self-starting tip to prevent drill wandering
Drilling & deburring in one process
Laser marked diameters that will not wear off with use
3 flats on shank to prevent slipping in chuck
September2018
