Step Drill 30960MVB412 ***

The shape of the blade is a wavy 2-blade type(patented). A precise drill hole is made fast in a perfect circle without producing much burr.The pilot drill at the tip allows speedy drilling by reducing shifting and quick capturing of the material.The special blade shape improves chip flow, reduces heat retention, controls blade wearing, and gives long life.Iron and stainless steel(up to 3mm).Step Width (mm):5Number of Stages (stage):9Shank Diameter (mm):6.5Drilling Dimension (phimm):4, 5, 6, 7, 8, 9, 10, 11, 12No CoatingCobalt High Speed SteelEnsure to use low speed when drilling into stainless steel.