3keego Hole Cutters are best on light drilling and are best suited in thin materials. Composed mainly of two types High-Speed Steel Hole Cutter (HSS) and Tungsten Carbide Tipped Hole Cutter (TCT). They are ideal for drilling in different materials such as stainless steel, sheet metal, cast iron, aluminum, thick plate and also wood. Diameter range from 12mm up to 300mm and more if required.