STANLEY TR45C4 Light Duty Stapler

I bought all three of those sizes but they didn't fit. If you go to a hardware store you'll see the blue arrow package with those sizes listed but not the stapler model. That's not it. It's the green package that has the mode listed on it! It's about there same price and there's about the same model number of staples. Notice the color of the background where it shows the staple is green. This is telling you you need to get the green box staples

I've had this lightweight staple gun for several years now, and it works great for most of my small projects. I've had no problem with the 1/4" staples purchased with it, which are what I've used for securing insulation edges to beams as well as household uses. Not sure why a couple of other reviews dissed this small staple gun, but it has worked well for me. Sometimes it jams on the small staples, but it's easy to clear and then continues. I'd recommend it for light job or for men or women with smaller hands as it is lightweight.