This sliding bracket is designed for use with rectangular shower rod kits. Fits standard shower heads, shower head shower clips with standard connectors. Fully Adjustable: Simply press the button to adjust the height of the mount on the rail, release to secure. Easy to install and easy to use. Fits 18mm wide and 30mm long rails. Dimensions: 11.8 x 4 x 2.3 cm. Please measure the rail diameter before purchasing. Features: Dimensions: 30 x 10 x 2.3 cm Fits 18 mm wide and 30 mm long. < p>content: 1 shower head holder. Comment: The dimensions indicated may vary by 1 to 3 mm due to manual measurements. Please only order if you accept this margin of error. The color of the actual item may differ from the picture depending on your computer's display and light settings. Thank you for your understanding.