Genexice Stainless Steel Toilet Paper Holder in White Finish with Power Gel Suction Cup Do NOT buy from other vendors if you want the original high quality product! Look for "Sold by Genexice, Inc." and buy the original brand. Innovative rotate and lock suction technology that works beyond just tiles and glass and installs without glue or tools Suction works best on ceramic tile, glass, mirror, granite, stainless steel, acrylic, laminate and any non-porous surface with glossy finish Suction will NOT work on stone, wood, sanded tile, porcelain, marble, dry wall & any surface that is bumpy, porous or matte finished Suction Cup Dimensions: 2.5" diameter (Your tile must be bigger than 2.5 inches)