Cobalt Step Drill Bit, 89HRC Hardness, 4 to 20mm Drilling Capacity, 1/4in Hex Shank, for Metal, Copper, and Aluminum Drilling, with 4 Spiral Flutes Design

Produktbeschreibung

High Hardness & Durability: Made from M35 cobalt with 89HRC surface hardness, this step drill bit can easily drill through hard materials like stainless steel, metal, and aluminum sheets. 9-Step Drilling Capacity: Offers drilling diameters from 4mm to 20mm, making it suitable for a wide range of drilling needs. Efficient Drilling: Features 4 spiral flutes design for faster and smoother drilling, ensuring a clean and precise hole every time. Versatile Application: excellent for drilling through various materials including wood, plastic, copper, and other metal plates. Convenient Storage: Comes with a storage box for easy organization and portability, keeping your drill bits safe and protected.