Set of 4 high-speed steel conical countersink drill bits, suitable for drilling wood and metal.

Material: 4241 high-speed steel, titanium coating. Applications: Suitable for cutting metal, wood, plastic, and thin sheet metal (hardness 25 HRC). Bevel angle range: 2-5 mm, 5-10 mm, 10-15 mm, 15-20 mm; Shank diameter: 6 mm, 8 mm, 10 mm, 12 mm; Head diameter: 10 mm, 14 mm, 21 mm, 28 mm. The 90° point design ensures clean, precise milling, ideal for chamfering round openings or machining tapered holes. These drill bits require a bench drill for optimal operation; they are prone to backlash. Using a hand drill will affect the quality of the chamfer.