UNIVERSAL SHOWER HOLDER: This handheld shower head holder is compatible with most showerheads on the market, but is not suitable for shower hoses with a bottom diameter greater than 0.86 inches (22 millimeters). Please measure your shoe size before buying. WATERPROOF MATERIAL: The suction cup shower head holder is made of engineering grade ABS plastic, which is durable, anti-aging and light in weight. The shower wand holder has waterproof function and will not fall off even when rinsed with water. EASY TO INSTALL: Simply wipe the wall clean, open the switch, remove the protective film, press firmly on the wall to squeeze out the air inside, and then close the switch to use No need for drilling and screws. Because it is a suction cup design, even when disassembled, it will not the wall and leave traces. ADJUSTABLE DESIGN: The shower head holder wall mount can be adjusted to multiple different angles during use, allowing you to feel a more comfortable shower. The shower handle holder can also be placed at any desired height, whether high or low, inside or outside the bathtub, making it suitable for children, the elderly, or people with disabilities who may not have access to the shower head. It can also be used to adjust the height of pets during bathing. USAGE GUIDE: This shower wand holder is suitable for non porous and smooth surfaces such as glass, mirrors, tiles, metal panels, plastic panels, marble, etc. NOTE: The shower head holder suction cannot work on any uneven surface.