VonHome Super Powerful Vacuum Wall Mounted Suction Cup Hook Holder - Strong Stainless Steel Hooks for Bathroom & Kitchen Innovative rotate and lock suction technology allows this product to install without glue or tools,it is easy to install. Suction works best on : ceramic tile, glass, mirror, granite, stainless steel, acrylic, laminate and any non-porous surface with glossy finish. Convenient and quick: Be able to install in where you want to set it any time. Material:SUS304 Stainless steel Dimensions:5.6 x 4.8 x 3.8cm(2.2x1.89x1.5inch)