- Durable Titanium Coating: Our drill bits are coated with a high-quality titanium layer, enhancing their durability and minimizing friction. This coating not only extends the lifespan of the bits but also allows for smoother cutting through tough materials, ensuring efficiency and longevity during your drilling tasks. - Versatile Applications: Ideal for both DIY enthusiasts and professionals, these drill bits are perfect for drilling into plastic and aluminum. For optimal performance, especially with metal materials, we recommend using coolant and maintaining a moderate drilling speed to prevent overheating. - Dual-Cutter HSS6542 Blades: Designed for precision, our step drill bits feature dual cutting edges that ensure fast and accurate drilling. The split 118° tip increases cutting speed and prevents wandering, making these bits suitable for various materials, including metal. Use Scenarios: 1. Perfect for home improvement projects, such as installing fixtures or creating holes for wiring in wooden or metal surfaces. 2. Great for automotive applications, where precise drilling into aluminum or metal components is required. 3. Essential for hobbyists working on model building or crafting, allowing for clean and accurate holes in various materials.