Love this! The way you don't have to use any tools to attach it to your desk is awesome! The bottom part opens so you can slide it over an edge or your desk, then let it go and it clamps down. There is a soft side that touches the top of your desk, so you shouldn't have to worry about any damage. It has a good grip, I'd say it's pretty secure. I included a pic for size reference with a gaming controller on it so you can get a better idea of the size. No tools are needed, and it's not hard to move it if you don't like where you put it.