It is more precise and safer to use these drill sets in the drill press. The tip is specially designed for drilling holes cleanly and is ideal for drilling hidden hinges and door locks. The head features an arc-shaped design that helps remove debris and provides high working efficiency. The cutting edge is sharp, with precise positioning, high hardness, high precision, and stable cutting performance. The drill bit produces clean, flat-bottomed holes without chipping. Made from high-quality alloy blades, the bits are hardened, tempered, and constructed from carbon HSS steel for enhanced sharpness and durability. They operate smoothly with reduced noise. The bits are coated for water resistance and corrosion protection. Suitable for drilling wood, these bits are precision-ground for consistent performance and are easy to resharpen. They can easily enlarge existing holes and drill various arc shapes. Ideal for use in wood products, cabinets, drawers, plastic, wood, and plywood. Compatible with hand drills, bench drills, vertical drills, portable electric drills, upright electric drills, and magnetic base drills.