Titanium coated construction: Made from speed steel with a titanium coating for exceptional durability and wear resistance. Suitable for demanding applications across wood, metal, and other materials without compromising performance. Coneshaped design: Engineered cone tips ensure accurate centering and consistent results. Enlarged spiral flutes promote smooth chip removal for clean, professionalgrade countersinks and chamfered edges every time. Complete 4size set: Includes sizes 25 mm, 510 mm, 1015 mm, and 1520 mm to handle any countersinking project. Versatile for delicate woodworking as well as heavyduty metalworking, suitable for professionals and DIY enthusiasts. Multiequipment compatibility: Works with table drills, milling machines, cordless drills, and drill drivers for flexible setups. Delivers consistent performance across different power tools and projects. Use scenarios: Woodworking and cabinetry: countersink screws for flush, finished joints in furniture, cabinets, and trim. Metal fabrication: countersink holes in brackets, plates, or frames to achieve flush fastener seating. General projects: convenient for quick, clean countersinking in wood, plastic, or soft metals when using a drill or drill driver.