- Versatile Applications: The step drill bits are designed to create holes of various diameters in aluminum, copper, steel sheets, and plastic or wood boards up to 3mm (0.12 in) thick. Please note, they are not suitable for stainless steel. - Durable Construction: Made from high-speed steel and coated with titanium, these drill bits offer exceptional durability, ensuring they remain effective and visually appealing for years. - No Pilot Hole Needed: The self-starting, non-walking split point tip allows for quick and easy drilling without the need for a pilot hole. The unique staircase design enables you to drill multiple sizes with one tool. - Efficient Two-Flute Design: The dual-flute design enhances chip clearance, allowing for smoother drilling and easier removal of debris. The sharp edges ensure precise holes in metal sheets, while the titanium coating prolongs the tool's lifespan. - Practical Use Cases: Ideal for DIY projects, home repairs, and professional applications, these bits are perfect for installing hardware, creating custom fittings, or crafting detailed designs. - Warranty Assurance: Enjoy peace of mind with a 2-year warranty and free replacement guarantee, ensuring you receive a reliable product. These step drill bits combine functionality, compatibility, and performance, making them an essential addition to your toolkit.