Professional Step Drill Bit Set for Sheet Metal

Features: - Made of high-speed steel (HSS) - Titanium-coated surface - Two-flute design for faster, smoother cutting - Step drill bits replace 29 individual drill sizes - High strength and hardness, easy to use - Suitable for drilling in wood, plastic, steel, aluminum and other non-ferrous metals Specifications: - Tip type: flat tip - Function on metal: drills first then cuts like a saw - Material: high-speed steel - Surface treatment: titanium coating - Step drill bit ranges: 4–12 mm / 4–20 mm / 4–32 mm - Hole saw drill bit sizes: 3 mm / 6 mm / 8 mm Includes: - 3 step drill bits and 3 hole saw drill bits Package contents: - 6 pieces high-speed steel drill bits + storage case