Mechanism of Vacuum Adsorption: Super strong suction cup sucker which diameter is large 3.5 , the of strong scalability, good airtightness of the silicone material, given its strong adsorption capacity. Holder-A single suction can bear 7.5 pounds maximum weight and keep it for longtime. Appearance color matches most shower hose colors, silver looks nobler in your bathroom, clear designed, Ensuring quality and longevity. Material: ABS plastic material,5 layer coating material for shiny chrome finish. Lightweight but heavy-duty engineering grade plastic. Suction cup shower head holder can be easily positioned at any desired height and perfectly adapts to different heights or different needs.