• Set of 8 wood dowel drill bits, consisting of 4 tapered bits and 4 plug cutters • Included sizes: 6mm, 10mm, 13mm, and 16mm (equivalent to 1/4", 3/8", 1/2", 5/8") • Made of carbon steel, offering high durability, corrosion resistance, and cutting precision • Shank diameter: approximately 9.5mm • Smooth surface for a professional finish • The 4-tooth beveled cutters allow you to create tapered plugs to fill countersunk holes • The standard cutters are useful for removing defects in wood • Suitable for use in bench and hand drills, although bench drills are recommended for greater stability and efficiency • It is important not to use at excessive speeds to avoid generating smoke or burns during work