• High-speed steel step drill bit for longer life. • Resistance to high temperatures and wear. • High-quality chip evacuation and heat dissipation. • Low cutting resistance, ideal for cutting. • Helps enlarge existing holes. • High precision, burr-free drilling. • Easy to install. • Titanium-coated tip. • Cutting edges of Ø4–32 mm with 15-step tapered drill bit. • Suitable for drilling steel, brass, wood, plastic, iron sheets, aluminum, insulating panels, PVC. • Material: high-speed steel. • Shaft diameter: 10 mm. • Specification: 4-32 mm/15 levels. • Shank type: Round handle. • Spiral step drill bit (4-32 mm), laser-engraved sizes for precise drilling. • Two-flute spiral groove design for faster, stable, and smooth cutting. • Covers different step sizes, allows drilling or enlarging holes without changing bits. • Titanium coating ensures easy cutting in steel, aluminum, brass, copper, plastic, wood. • Practical for sheet metal, sink, car repair, drilling in a variety of materials.