: Our Suction Cup Hook Are Made Of Abs Plastic, Eco-Friendly. The Adsorption Is More Powerful, Sturdy And Waterproof. The Aluminum Alloy Screw Head And The Copper Material Which Is Not Easy To Slide Are The Secret Of The Long-Lasting Load-Bearing Of The Suction Cup Hook.^Heavy Duty Hooks: The Suction Cup Can Hold Up To 6.6Lb. Each Suction Cup Is 2.2"X3.9". For Hanging Towels, Bathrobes, Bath Wipes, Ladies Backpacks, Coats, Holiday Decorations, Etc.^Easy To Install And Removal: No Screws, No Nails, No Holes, No Glue, No Tools Convenient To Install In Ewhere. Turn The Knob Counter Clockwise And Release The Vacuum. Just Wash The Suction Cup Hook With Warm Water And Air Dry It For Reuse.^Multifunctional Suction Hook: The Suction Cup Hook Suitable For Direct Mounting On Smooth, Non-Porous Surfaces Such As Glass, Mirrors, Smooth Tiles. Even Some Rough Surfaces Like Ground Glass.^Waterproof And Oilproof: Water Spraying On The Towel Hook Can'T Affect The Hook, The Sticky Suction Cup Let It Adsorb Solidly On The Bathroom And Kitchen. ^