Step Drill Bit Metric Sizes are designed to cover a range of metric hole diameters in a single drill, enabling efficient, versatile drilling for metals, plastics, and composite materials. Constructed from high-speed steel or coated variants, these step drills maintain sharp edges, resist wear, and perform reliably in workshops, fabrication shops, and industrial facilities. Tapered shanks provide stable installation in drill presses, CNC machines, or hand drills, minimizing vibration and ensuring accurate hole sizes. Ideal for precision tasks, prototyping, and professional industrial use.