Good Quality: This includes a set of five high-speed steel drill bits, perfect for precision metalworking. Each bit is designed to meet the rigorous demands of professional environments.Advanced Material Construction: Crafted from high-speed steel and coated with titanium, these core drill bits offer enhanced durability and longevity. The titanium coating not only minimizes wear but also reduces friction and heat during drilling.Versatile Drilling Sizes: This comprehensive set includes 43 different sizes, ensuring you have the right tool for any drilling task. From fine precision work to larger applications, these bits are designed to handle a variety of metal drilling needs.Innovative Four Spiral Flute Design: The unique four spiral flute design allows for faster and cleaner cuts, improving work efficiency and quality. This feature is particularly beneficial in reducing clogging and ensuring smooth drilling operations.Optimal for Metalworking: Specifically engineered for metal drilling, these bits are an essential tool for any DIY supplies kit. Whether you're a professional metalworker or a hobbyist, this set provides the reliability and performance needed for your projects.Description/Features:Experience precision and durability with our industrial-grade step drill bits, crafted from high-speed steel. Designed for smooth drilling, the spiral cutting edges effortlessly penetrate metal, wood, aluminum, stainless steel, and PP. Ideal for heavy-duty tasks, this reliable tool set comes with a convenient PP storage case, ensuring your bits are organized and protected.Specifications:Material: High-speed steelSuitable for: Metal, Wood, Aluminum, Stainless Steel, PPDesign: Spiral cutting for smooth drillingPackage Includes: 5 x Step Drill BitsNote:Color may vary slightly due to different lighting and screen settings.Allow a 1-2cm difference in size due to manual measurement.On-Time Delivery: Full refund if the product isn't received within the guaranteed