Armegs Quick-Cone, with its uninterrupted cutting edges, is ideal for producing an infinite range of hole diameters giving maximum versatility. Its tapered cone design allows easy enlargement of holes, ideal for problem solving and awkward jobs. With a self-centring drilling action, holes are quick and easy making the cone drill an ideal trade solution. Available in a range of sizes. Can be used in sheet steel, non-ferrous metals, plastics, formica and plywood. High-Speed Steel 9mm Triangle Shank 25mm - 40mm Suitable for Sheet Steel, Laminated Composite Materials, Non-Ferrous Materials, Plastics & Plywood High-Speed Steel Precision-Ground Tip High-Speed Steel 9mm Triangle Shank 25mm - 40mm Suitable for Sheet Steel, Laminated Composite Materials, Non-Ferrous Materials, Plastics & Plywood High-Speed Steel Precision-Ground Tip