Size: Suitable for slide bars with a diameter of 18-25 mm. Please check the diameter of the slide bar before ordering. (How to measure the diameter: slide bar diameter = circumference (slide bar) / . Easy to install tool-free shower head holder: No tools required for installation, easy to install and to use, practical and fast.Its installation is very simple since it is enough to unscrew the piece on the right to increase the center distance of the hole and to screw it once the shower bar is in the hole. 360 Rotation: The holder can be rotated 360 degrees to adjust the height and direction of the shower, ideal for replacing a shower head holder without having to replace the whole rod. ABS plastic durable and gleaming chrome Built to last - Designed to fit an 18-25mm diameter vertical rod Constructed of high quality ABS plastic and finished with gleaming chrome to resist scratches and corrosion from scratches, this stand This curved shower head set will pair perfectly with other hardware and accessories to keep that look in sync in your bathroom. How to use: 1. Grasp the bracket 2. Twist and loosen 3. Secure to pole 4. Twist and tighten 5. Rotate at your own angle.