Three Piece blade Spiral Nice Mighty Step Drill 3S-NMS-21G TRUSCO

With 3 blades, the burden on the cutting edge is reduced and the blade life becomes longer. The discharge of chips is quick and welding is reduced.3 edge blades, with no center deviation in thinning processing, penetration is quick.Work material: Iron plate/copper plate, galvalume(up to 2mm), aluminum plate/wood/resin(up to 3mm), stainless steel plate(up to 1mm).Step Width (mm):3Number of Stages (stage):9Shank Diameter (mm):6.35Drilling Dimension (?3mm):5, 7, 9, 11, 13, 15, 17, 19, 21Surface Treatment: Titanium CoatingCobalt High Speed SteelCutting Oil