Three Piece blade Spiral Nice Mighty Step Drill 3S-NMS-34G 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):2.5(3)●Number of Stages (stage):11●Shank Diameter (mm):10●Drilling Dimension (?3mm):6, 13, 15, 16, 21, 22, 25, 27, 28, 30.5, (34)●Surface Treatment: Titanium Coating●Cobalt High Speed Steel●Cutting Oil