- HSS Titanium Coating : Engineered from high-speed steel and enhanced with a titanium coating, this step drill bit ensures exceptional sharpness and longevity, making drilling tasks efficient and precise. - Versatile Drill Bit Sizes : Choose from a range of step drill bits: - 5-step (4-12 mm) : Includes sizes 4 mm, 6 mm, 8 mm, 10 mm, and 12 mm. - 9-step (4-20 mm) : Features sizes 4 mm, 6 mm, 8 mm, 10 mm, and additional increments up to 20 mm. - 10-step (3-12 mm) : Offers sizes 3 mm through 12 mm. - Quick Change Hex Shank : The 1/4" quick change hex shank allows for effortless and rapid bit changes. It is compatible with impact-resistant power tools, adding to your convenience during projects. - Wide Application Range : Ideal for drilling through materials like plastic, aluminum, iron, and other sheet metals, this bit is a practical choice for a variety of tasks. Note: It is not suited for stainless steel or harder metals. - Practical Use Scenarios : - Perfect for HVAC professionals installing ductwork and air conditioning units. - Great for hobbyists crafting metal artwork or home improvement projects. - Useful in electrical work for creating precise holes in junction boxes or panels. This step drill bit is designed to meet the needs of both professionals and DIY enthusiasts, offering versatility and reliability for your drilling tasks.