Heavy duty sign holders are made to hold thicker and larger signs and displays with strong gripping fins to create a tight hold for both thin and thick materials up to 1/4" thick. You can buy these heavy duty gripper adhesive table top sign holders online in either three inch or six inch lengths. The adhesive on the bottom is strong enough to hold your signs horizontally and help prevent being knocked over, as well as vertically as a sign display on a wall or shelf; in fact, it will stick to most any hard, clean and smooth surface. The one inch deep base and 7/8 inch height offer additional stability and grip allowance. Sold with ten pieces per pack, these tabletop or wall sign holders are perfect for inventory signs, counter top promotional displays, restaurant menu and price lists, and much more.