Drill bits for drilling in various materials such as wood, plywood, concrete, plastics, ceramic tiles, soft metals, steel, brick, etc. Precise blades are made of high-quality tungsten carbide. The geometry of the spiral accelerates the removal of cutters and ensures high productivity. A cylindrical handle with three planes improves the secure positioning of the drill bits in the device. The design, material, and workmanship make the drill bits efficient, durable, and resistant to damage and blunting.