• Heat-treated tungsten carbide tip for smooth cutting and high hardness. • Arc-curved head design facilitates chip removal and increases efficiency. • Centering spur allows for precise, clean, and repeatable holes. • Suitable for drilling flat-bottom, hidden, and overlapping holes in wood and soft materials. • Compatible with bench, vertical drills, and CNC milling machines; not suitable for hand tools. • Made of tungsten carbide and 45# carbon steel with a 7 mm round shank. • 19 mm drilling diameter with a depth of up to 48 mm.