The Incredible In-Between Gypsy Gripper is designed with a suction cup that attaches to any smooth ruler or template surface. The Gripper ensures complete control of your medium sized rulers and templates, and keeps your fingers out of harm’s way - making this a must have for any new or young quilter! This gripper has a little “ear” that shows green when the gripper is attached and red when it needs to be reattached. Note: The ruler or template must be at least 5 inches or larger – excluding the hang hole – to be effective.