Step Drill 30912VB12 ***

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):4Number of Stages (stage):5Shank Diameter (mm):10.0Drilling Dimension (phimm):22, 28.5, 31, 32, 35No CoatingCobalt High Speed SteelEnsure to use low speed when drilling into stainless steel.