Feature:1. 1. Durable: Made of high-quality 4241 high-speed steel, titanium-plated surface, anti-oxidation, no rust, wear-resistant, long service life.2. 2. Strong Practical: A combination set of 6 specifications, 3-step drill bits, and 3 serrated drill bits, meet your diverse needs and improve work efficiency.3. 3. Precise & Efficient: Combining the multi-grid drilling of the pagoda bit and the sharp edge of the serrated bit to facilitate the removal of cutting waste when drilling, preventing iron chips or sawdust from scattering, makes drilling cutting faster, more precise, smoother, and more efficient.4. 4. Easy to Carry: The most commonly used drill size, light and small, does not take up space, Can be stored in your toolbox and used anytime, anywhere, convenient and fast.5. 5. Wide Application: Titanium coating ensures easily cutting through steel sheets, aluminum sheets, copper & plastic & wood board, and many other types of sheet metal ease, Including tile, concrete, tile, brick, wood, plastic, glass, masonry, etc.Specification:Material: 4241 high-speed steelColor: GoldStep drill: 4-12, 4-20, 4-32Saw drill: 3mm, 6mm, 8mmProcess: Titanium platingShank shape: triangular shank, hexagonal shankApplication: Suitable for drilling and reaming of iron plate, aluminum alloy, copperplate, wood board, plastic, and other materials.Function: One drill bit can drill holes of multiple specifications, which is convenient to use.Package List:3 *Step Drills3 *Serrated DrillsNote:Due to the lighting effects and shooting angles, there is a color difference in the product, please understand.Due to manual measurement, there is a tolerance in the product size.