Transform your drilling capabilities with this premium 3-piece step drill bit set. Each titanium-coated HSS (High-Speed Steel) bit features precisely engineered steps for creating clean, accurate holes in metal, wood, and other materials. The set includes three versatile bits with size ranges: 4-20mm, 4-12mm, and 4-12mm, allowing you to tackle various project needs efficiently. The distinctive gold titanium coating enhances durability and reduces friction for smoother cutting performance. Each step is clearly marked with size measurements for precise hole sizing. The hex shank design provides secure grip in power tools, while the included storage case keeps your bits organized and protected. These step drill bits eliminate the need for multiple conventional drill bits, saving you time and effort while delivering professional results. Perfect for both DIY enthusiasts and professional craftsmen working on sheet metal, plastic, or wooden applications.