Spectrum 3 in One Over the Cabinet Door Single Hook w/Removable Suction Cup 3 in one single storage hook with removable suction cup. 3 mounting options: use on smooth surfaces with removable suction cups, over cabinet doors or shower door handles. Adds convenient storage where you need it most. Perfect for holding towels, washcloths and other small items. Measures 3 inches high x 1.5 inches wide x 1 inch deep.