- PREMIUM QUALITY: Crafted from high-speed steel (HSS), our step drill bit is heat-treated and mirror-polished for outstanding durability and sharpness. This design minimizes friction, allowing for cooler operation and longer service life. - WIDE COMPATIBILITY: Equipped with a 1/4 inch hex shank, this drill bit securely fits in various tools such as gun drills, hand drills, loading drills, and bench drills. The robust fit ensures stability during use, preventing slippage or detachment. - HIGH PERFORMANCE: This step drill bit excels in deburring, chamfering, cutting, and enlarging round holes across diverse materials, including steel, wood, and plastic. It effectively handles different tasks with ease. - VERSATILE APPLICATIONS: Suitable for processing holes of varying diameters, this drill bit simplifies your projects. It is ideal for use with steel sheets, aluminum sheets, copper, plastic, and wood panels, making it perfect for both professional and DIY applications. - RELIABLE DESIGN: The drill bit’s precision engineering promotes accurate countersinking, ensuring clean and professional results every time. Leverage this essential tool to enhance your drilling efficiency and achieve high-quality outcomes in all your projects. Whether you're working on metal fabrication or home repairs, our step drill bit delivers the performance and reliability you need.