Genexice Stainless Steel Suction Shower Basket 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 allows this product to install without glue or tools Suction works on non-porous surfaces that are flat, smooth and glossy such as ceramic tile, glass, mirror, granite, quartz, stainless steel, acrylic and laminate surfaces Suction will NOT work on stone or sanded tiles, porcelain, marble & any surface that is bumpy, rough or matte finished Dimensions: 12" x 3.5" x 3.5", Suction Cup Diameter: 2.5"