The 30*18mm shower head holder is meticulously designed to fit a wide range of shower heads precisely. Whether you have a standard - sized shower head or a slightly larger or smaller one, this holder's dimensions ensure a snug and secure fit. It eliminates the common problem of shower heads wobbling or not fitting properly, providing a stable base for your shower experience. Crafted from premium materials, this shower head holder is built to last. It is resistant to corrosion, rust, and wear, even in the humid environment of a bathroom. The sturdy construction not only ensures the longevity of the product but also guarantees that it can withstand the weight of various shower heads without bending or breaking, offering reliable performance over time. Simply press the button to adjust the height of the bracket on the rail and release to tighten it. Installing the 30*18mm shower head holder is a breeze. It comes with all the necessary mounting hardware and clear - to - follow instructions. With basic DIY skills, you can quickly attach it to the wall in a matter of minutes. There's no need to hire a professional, saving you both time and money. The simple installation process makes it suitable for homeowners and renters alike. Button to control the height，Adjust the height of the shower head by pressing the button, which is non-slip。