Secure way to add signs at the shelf edge. Gripper fins hold signs firmly in vertical (flag) position. Use two or more holders from shelf to shelf for larger signs. Hinged style option is great for mounting signs in high traffic areas - flexible hinge swings and returns to original position when bumped. The metal base is designed for extra strength/durability and fits the underside of most perforated shelves using included hardware. Removable and reusable. No assembly required. Patented &more