Suction Cup Tissue Holder ShineMe Stainless Steel Toilet Paper Holder Suction Cup Kitchen Plastic Wrap Paper Holder 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. Innovative rotate and lock suction technology allows this product to install without glue or tools. Use Manual: Clear the wall and ensure the wall dry, and then Press the hook on the wall, clockwise turning to lock it, it will stick to the wall firmly. The hook is reusability, by clockwise turning can lock it, and counterclockwise turning can remove it.