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 = (Slide bar) circumference / , this is supposed to fit a UK standard shower head. Installation was very easy and quick just twist the lock to release and slot the holder on the pole tighten and you're good to go. 360 Degree Rotation: The holder can be rotated 360 degrees to adjust the height and direction of your shower. Moving the shower head when showering is very light but stays in place due to the ratcheting system that prevents unwanted movement. The rubber grip also helps keep the clamp in place when loosened a bit to allow horizontal rotation. Durable ABS Plastic Shiny Chrome Built to Last: Designed to fit up to 18-25mm diameter riser rail Constructed with high quality ABS plastic and finished with shiny chrome to resist scratches and corrosion, this curved shower head holder will match perfectly with other fittings and accessories to keep that synchronized look in your bathroom. It's made out of plastic and chrome covered plastic. How to use: 1. Take the holder 2. Turn and Loosen 3. Clamp to the Pole 4. Turn and Tighten 5. Rotate to desire angle Delivery Quantity: 1pc Product color:silver Product size: 12.5*2CM