Woodworking hole saw bits are made of strong materials that cut wood efficiently and cleanly. Heat treatment technology. The blade is sharp, high hardness, and durable. Strong hardened steel body ensures high hardness, anti-rust, sharp and durable. Drilling is more efficient with the hole saw bit, which has a curved top. Compared to conventional Forstner drill bits, significantly shorter cutting times are achieved.Forstner drill bits have three teeth and a double edged bottom cleaning, which reduces cutting resistance and increases uniformity of force. With the hole saw drill, you can drill flat-bottomed holes and pocket holes easily, smooth chip removal, improved drilling efficiency, no edge vibration during drilling, high concentration, and high quality holes.It is not only possible to adjust the depth of the drill, but with the Forstner drill bit, you are also able to drill wood boards of various thicknesses, which makes drilling even simpler. With its optimized ultra-sharp cutting teeth, this hole saw bit is perfect for cutting hard and soft woods efficiently and smoothly, whether you are working with metal or wood.