I bought the small straight one to use on my long arm. It has a strip that looks like the hook part of Velcro on the bottom. I do use it occasionally, but I find the Velcro is too far from the edge, so the fabric can slip a little and the added thickness of the strip makes it tippy. Depending on the design I'm doing, the handles work great or are in the wrong spot. I use it occasionally, but prefer a plain straight edge.