Genexice Chrome Shower Head Holder with Rotate & Lock Power Gel Suction Cup Product is in English retail packaging with Genexice logo Innovative rotate and lock suction technology with black gel suction cups provide extra holding strength Suction works best on ceramic tile with glossy finish, glass, acrylic, granite, stainless steel and glossy laminate surfaces Suction will NOT work on stone, matte-finished tiles, porcelain, marble or any surface that is bumpy, rough or not glossy Suction Cup Diameter: 2.5 inches (Your tile must be bigger than 2.5 inches.)