Hss Step Drill Bit : Crafted from premium high-speed steel with titanium coating, our step drill bits offer superior durability and wear resistance. Cobalt Alloy Steel : The addition of cobalt enhances toughness, reducing friction and heat during drilling for extended tool life. Smooth Drilling Experience : Equipped with a non-walking drill tip, these bits provide clean, accurate holes in metals, woods, and plastics without wandering. Wide Material Compatibility : Suitable for drilling through carbon steel, sheet iron, copper, aluminum, wood, and plastic with ease. Aluminum Protective Housing : Comes in a sturdy aluminum case to protect the bits from dulling and ensure they remain in pristine condition. Elevate your DIY projects to professional standards with our Hss Step Drill Bit Set. Designed for efficiency and precision, this set includes 5 pieces of titanium-coated drill bits that are perfect for tackling a variety of materials. Whether you're working on metal fabrication, woodworking, or general repairs, our drill bits deliver smooth, controlled drilling every time. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.