Available in 3 styles, 2.5 in. dia Suction Cups are made of clear vinyl and can be used to mount signs/displays/decorations to glass cooler doors, display cases, and windows to increase brand visibility and promote product cross selling. Mushroom Head style lets signs slide over head and remain secure, Metal Hook style allows for one-step hanging, and Plastic Thumbtack style provides additional security by piercing paper signs or securing pre-holed signs with thumbtack.