- Versatile Size Range: Available in 13 sizes (5, 7, 10, 12, 15, 17, 20, 22, 25, 27, 30, 32, 35 mm), our step drill bits cater to a wide variety of drilling needs, allowing you to tackle multiple projects without wasting time searching for the right tool. - Durable Material: Constructed from heat-treated high-speed steel with a nitrided coating, these step drill bits reduce friction and operate cooler than standard bits, significantly extending their lifespan for long-term use. - Efficient Double Slot Design: The unique double slot design automatically deburrs while drilling, promoting faster and smoother cutting. The triple-flat shank ensures a secure grip in your drill, minimizing slippage during operation. - Adaptable Shank: The triangular round shank is compatible with electric screwdrivers, drill machines, and conventional drills, making it a versatile addition to your toolkit. - Space and Cost Saving: The ladder structure of these drill bits allows you to drill various hole specifications with a single tool, eliminating the need for multiple bits. This not only saves storage space but also reduces the overall cost of your drilling solutions. Use Scenarios: 1. Home Improvement: Ideal for installing fixtures or plumbing where different hole sizes are required. 2. Electrical Work: Perfect for creating precise holes in metal or plastic for wiring and cable management. 3. Craft and Hobby Projects: Great for DIY enthusiasts who need to drill various sizes for creative projects without cluttering their workspace with multiple tools.