I lost my old Arrow T50 heavy duty stapler and thought it would be a good replacement. It had the word "heavy duty" in its name, but it's not a heavy-duty stapler. It cannot use the most common large 1/2 inch braces that I have in abundance. The staples that come with this gun are the little flat things you see on a desktop office stapler, only thicker. It also has a small rubber insert on the handle that just falls off. I love how you can adjust the amount of force the handle uses on the back. That's a cool feature.