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. High-quality alloy blades are hardened, tempered, and constructed from carbon HSS steel for enhanced sharpness and durability. Operates smoothly with reduced noise. The bits are coated for water resistance and corrosion protection. Suitable for drilling wood. Precision-ground for consistent performance, easy to resharpen, capable of enlarging existing holes and drilling curved paths. Can be used for woodworking projects, cabinetry, drawers, plastic, plywood, and similar materials. Compatible with hand drills, bench drills, vertical drills, portable electric drills, upright electric drills, and magnetic base drills.