1 Second Installation: The Suction Cup Shower Hook Stands Out From Other Hooks Because Of Its Easy And Rapid Installation Which Cause Zero Damage To Your Wall. No Drilling, No Glue, No Tools, No Screws, No Holes! Simply Choose A Smooth And Dry Surface And Press The Hook Against The Wall Until You Hear The Sound "Puff" Which Means The Installation Is Done! Warm Tips: The Suction Cups Only Stick On Smooth, Dry, Non-Porous Surfaces Like Metal, Glass, Tile, Stainless Steel And Acrylic, But Not Apply To Uneven Tiles, Texture Plate, Unfinished Marble, Painted Wall, Wallpaper | | Powerful Suction Cup: Inspired By The Tentacles Of Octopus, The Shower Holder Suction Cup Applied The New Bionic Technology To Ensure Waterproof, Oil-Proof And Anti-Aging. The Towel Hook With Thicken Plastic Suction Can Hold Up To 11 Lbs And Stick Sturdily For Years, Available To Remove And Reinstall It In A New Surfaces | | Unique Patented Design: There Is An Elastic Pc Board And Skeleton In The Suction Hook.