Reusable and Removable: These suction cup shower hooks are made of durable stainless steel with a brushed finish. They are waterproof and rustproof for use in humid bathrooms. Their washable and reusable suction cup base allows you to loosen the knob by turning it counter-clockwise and remove it with a knife. They leave no marks or sticky residue. Easy Installation without Drilling: These suction cup shower hooks install without tools, drilling, or glue. Press down the suction cup base and turn the knob clockwise to release air and increase suction pressure for optimal strength. No more ugly holes in your walls! Detailed instructions are included. Ultra-Strong Material and Optimal Durability: Made of high-quality stainless steel, these brushed nickel towel hooks offer a maximum load capacity of 5 kg and a long lifespan. Simply wash them with water if they get dusty. Practical and Stylish: These suction cup shower hooks feature a modern brushed nickel design. Simple yet stylish, they create extra storage space in your home. Their luxurious, exclusive appearance, combined with their practical features, means they can not only store your belongings but also enhance the look of your bathroom. Usable Surfaces: Please note that these stainless steel suction cup hooks only adhere to smooth, clean, flat, and non-porous surfaces such as glass, mirrors, smooth tiles, stainless steel, plastic, acrylic, cultured marble, smooth polished metal, etc. They should not be used on rough surfaces, lime-cement walls, wallpaper, unpainted wood, or mosaic tiles.