Magic stickums patented technology was designed to perform better and long than ordinary suction hooks. The exclusive red line indicator lets you easily control the suction power, keeping your items in place and avoiding the nuisance of having them fall. Stickums hold securely on smooth, non-porous surface areas found in bathrooms, kitchens, laundry rooms and can be easily remove without leaving any unsightly marks or residue. Instructions for use are located on back of card.