Strong PracticalA combination set of 6 specifications, 3-step drill bits, and 3 serrated drill bits, meet your diverse needs and improve work efficiency. Precise & EfficientCombining 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. Durable In UseMade of high-quality bearing steel, titanium-plated surface, anti-oxidation, no rust, wear-resistant, long service life. Easy To CarryThe most commonly used drill size, light and small do not take up space, Can be stored in your toolbox and used anytime, anywhere, convenient and fast. Wide ApplicationTitanium coating ensures easily cut 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.