Forstner Bits are an important tool for many hardware installations where a specific depth of the hole is required. The Forstner bit is guided by the wide outside rim of the bit whereas the drill bits are guided by the tip. These bits are the perfect choice to produce flat bottomed holes. It can drill a flat-bottomed hole, making them a necessary tool for many hardware installations where a precise depth of mortise is required. They are optimized for woodworking applications and cut exceptionally precise, clean-edged holes in wood.