Size: 11.8 x 4 x 2.3cm / 4.64 x1.57 x0.9 . For suit 18mm / 0.7 width, 30mm / 1.18 length riser rail. This slider the bracket is designed for use on a rectangular shower rail assembly. And suitable for standard shower head, shower clamps for handheld shower heads with standard connector. Simply press the button to adjust the height of the brackets on the rail and release it into the fixing.Push button setting. Easy to install, operator simplicity. Quantity: 1 pieces Note: It does not include other things, the color is based on the first picture, and other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item. . Due to manual measurement. Please allow deviation. THANKS!