As someone who works in the Industrial and Scientific field, I often have to deal with HVAC ductwork. According to my experience, this duct notcher tool is a game-changer. It allows me to easily notch out ductwork with precision and speed. The tool is sturdy and well-made, ensuring long-lasting use. However, it can be a bit pricey, but the quality of the tool outweighs the cost. Overall, a great investment for those in the industrial field.