This item is a plug which is straight and tapered for deep wood cutting. The plug is made of quality hardened carbon steel which is and solid. Chamfered cutters make tapered plugs to fill countersank holes. It is suited for bench drill and electric hand drill. Those plug cutters are sure to be a great piece to your warehouse. Feature - ColorSilver - Material: Carbon Steel - Packing Size: About 10.5x7x2.5cm - 6mm, 10mm, 13mm, 16mm. - Package included: 4 plug drill - Straight and tapered plug to achieve great finish in wood - Made of quality hardened carbon steel which is and solid - Chamfered cutters make tapered plugs to fill countersank holes - Suitable for bench drill and electric hand drill - Note: The operation should not be too fast, or easy to produce smoke, and burnt black, Package list: 4 Plug Cutters