Super Suction and Long-Lasting Durability: The suction cup hooks is made of high-quality ABS plastic and BASF TUP rubber, which can withstand a maximum load of 15 pounds and maintain suction for several years. No Damage:No tools, no drilling, no screws, no holes-this prevents any damage to the permanent structure and provides a flexible relocation location. Just suck the suction cup hooks on the tile wall. No Indentation: If you need to change the use position of the product, then you only need to lift the suction hook, then the suction cup hooks will fall off the wall to ensure that are will not leave indentation and wear on the wall. How to Use:Before installing the suction hook, the surface must be clean and dry. First, the suction cup must be firmly pressed for 3 seconds to squeeze out the air, and then the pull hook must be pulled down to lock it on the wall surface. Then hang your clothes, towels, sponges, bathrobes, bedroom dressing,loofah,etc. Use Tips and Attention:This item is a pack of two hooks that works only on non-porous,smooth surfaces such as polished ceramic tile,mirror, glass window,polished stainless still wall and plastic board etc, won't work on any porous,bumpy,rough or textured surfaces such as rough coating surface,unpolished marble or wooden door,rugged porcelain surface etc.