Review on Dritz Double Rivets Nickel Fasteners by Sasha Hsiao

I was a little concerned because one of the reviews said they didn't stay closed. It must have been user error as they are nice, neat and strong holding two layers of leather together. They need to be tapped on the tool with a hammer, so what could be causing the problem? Also, as some say, the cutting tool is not the sharpest. I rubbed it on a piece of sandpaper and then with a hammer. I think it deserves 4.5 stars because I had to sharpen the tool but I'm very happy with the end product.