Usage Tips:Strong suction cup handle for door, window, cabinet, refrigerator, shower grab bar, bathroom sliding door handle (silver color). Easy to install and uninstall, no need to use tools to install or remove. It is lightweight and compact, so you can take it with you when you travel, and easily install it in a hotel room or bathroom, and carry it around as needed. The armrest can be firmly fixed on any flat, non-porous surface. Portable support handle, suction cup vacuum pressure provides super grip, more convenient to open sliding doors/windows. Can be used on any flat surface without holes. It can only be installed on any flat smooth surface, including tile, glass, metal, plastic, etc. Note: The data is all manual measurement, please allow 1-1 error 3cm; due to the difference in light and display, there would be a certain color difference, please refer to the actual object received.