Spiral Takenoko Drill TKS638G OMI

First proprietary spiral shape manufactured in Japan.Adopts HSCO steel for excellent wear and heat resistance.Heat prevents chips from welding to achieve long life.More than 3 times longer durability and faster cutting speed than conventional straight blades are realized.Work material: Iron/aluminum plate(2mm), stainless steel plate(1mm), wood/plywood(3.5mm).Step Width (mm):5Number of Stages (stage):13Shank Diameter (mm):10Drilling Dimension (?3mm):6, 12, 15, 17, 19, 21, 23, 25, 27, 30, 33, 35, 38Surface Treatment: Titanium CoatingCobalt High Speed SteelNone