Enhance your drilling efficiency with this high-performance Step Drill Bit, expertly crafted from durable M35 cobalt steel for exceptional heat resistance, strength, and long-lasting durability. Featuring a precision-engineered design with four spiral grooves and sharp cutting blades, this drill bit delivers faster and smoother cutting, allowing you to effortlessly drill through a variety of materials including stainless steel, metal sheets, wood, plastic, aluminum, and copper. Key Features: · Premium M35 Cobalt Steel Construction: Ensures outstanding hardness and heat resistance, with a surface hardness rating of 89HRC, enabling high-speed drilling through tougher materials. · Efficient Four Spiral Grooves and Cutting Blades: Designed for quicker, smoother cutting action, reducing effort and improving overall drilling performance. · Multi-Size Step Design: Offers nine precise hole diameters ranging from 4mm to 12mm (0.2 to 0.5 inches), providing versatility for different drilling requirements without the need to switch bits. · Standard 1/4-Inch Shank: Compatible with a wide range of drilling machines and tools, ensuring easy installation and secure grip during operation. · Wide Material Compatibility: Ideal for drilling stainless steel, metal sheets, wood, plastic, aluminum, copper, and other metal plates, making it a versatile addition to any toolkit. Specifications: · Material: M35 Cobalt Steel · Hole Diameters: 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm (0.2in to 0.5in) · Shank Diameter: 1/4 inch Package Includes: · 1 x Step Drill Bit This Step Drill Bit combines high hardness, heat resistance, and precision engineering to provide smooth, efficient drilling across multiple materials and hole sizes. Its durable construction and versatile design make it an essential tool for professionals and DIY enthusiasts seeking reliable and accurate drilling performance.