No damage: no drilling, no screws, no holes, no glue. Super suction power, long-lasting durability: The suction cup is made of high-quality ABS plastic and German BASF TUP rubber, which can withstand a load of up to 13 pounds and maintain suction for many years. Easy to install and remove: Just push or pull the lever handle to lock or release, it is designed to be detachable and reusable for replacement. Use tips and precautions: This product is a pack of two hooks. It is only suitable for non-porous and smooth surfaces, such as polished tiles, mirrors, glass windows, polished stainless steel static walls and plastic panels, etc. It is not suitable for any porous bumps , Rough or textured surfaces, such as rough coated surfaces, unpolished marble or wooden doors, rough porcelain surfaces, etc. Wide Use Ability This Suction Cup Hooks can be used for bedrooms, bathrooms, shower,tile,bathtub,closets, cabinet, kitchen, glass window, office, armoire and more places to save space and organize your favorite things. suction hooks for shower is waterproof and oil-proof, so please rest assured to use it in the kitchen and bathroom.