I bought this to fit frets into a guitar neck that needed a special sealant. When I opened it, the first thing I noticed when I was about to attach the bell was that the ram was upside down, which is why I needed it. A screwdriver in minutes I was in business. He worked pretty well. The only downside I have is that it's quite greasy. Be prepared to wash your hands multiple times and wear clothes you don't like. Otherwise I am a satisfied customer.