One of the cheaper and most useful tools I own. I use the ring clamp for almost every piece of jewelry I make. Having control over what I'm making is so important, this tool helps me file straighter, pierce better, and polish quicker. One of my favorite things to do with it is clamp my piece and anchor it against the bench pin. Doing this makes everything I do more accurate. Try it and you'll see just how more effective it is than holding whatever you're filing in your fingers. I almost forgot, less chattering of the file! Need I say more? Use your ring clamp!...