Magnetic Gripper Sign Holders are ideal for warehouse rack system environments, shelf gondolas and freezer cases. Gripper fins hold signs firmly in vertical (flag) position. The versatile magnetic base assures maximum holding power on metal surfaces. Use two or more holders for larger signs. Available in two styles: Standard, which will hold signs firmly straight, or hinged, which is great for placing signs in high traffic areas because the flexible hinge will swing up to 180° and return back to its original position when bumped. Sign holders are removable and reusable. Warning: Magnets should not be used near electronic equipment.