3 Review(s)

100% brand new and high quality. HSS Spiral grooved Step Drill Bits Cut Tool Set. Titanium coated to reduce friction and run cooler Automatically deburr holes as you drill High speed steel,durable. Widely used to cut holes in a variety of material like steel, wood, thin iron, aluminum alloy, insulation boards, PVC sheet,ect Color : as picture show Material :High speed steel(Suitable for use in the hardness below 25 degrees of workpiece, such as carbon steel, aluminum parts) Surface treatment : Titanium Plated Scop : thin iron plate,aluminum,insulation panels,PVC panels 5mm thickness within the timber. Tyep:9 steps(4mm,6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm) shank:Triangular handle Package Included: 1*4-20mm(9 steps)