Genexice Stainless Steel Suction Paper Towel Holder Innovative rotate and lock suction technology allows this product to install without glue or tools. Simply push to create suction then twist to lock it Suction works on surfaces that are flat, smooth and non-porous such as ceramic tile, glass, mirror, granite, laminate, stainless steel and acrylic NOT recommended for stone or sanded tiles, porcelain, marble & any surface that is bumpy or matte finished Material: Holder - Stainless Steel, Suction Cup - Polyurethane Suction Cup Diameter: 2.5", Bar Length: 12.25"