Durable construction: The shower holder is made of engineering grade ABS. Clad in an industry-leading chrome finish designed to resist daily scratches and corrosion. ADJUSTABLE DIAMETER AND HEIGHT: The shower head holder fits the round risers of an outside diameter of 18 to 25 mm. You can easily adjust the height of the showerhead along the shower bar to provide a comfortable showering experience for every member of the family. Note: 21mm is the top, 19mm is the bottom, do not install at the bottom. 360 Degree Rotation: The shower head holder can rotate 360 degrees freely. To make it easier to adjust the spray angle, you can tighten or loosen the bracket screws depending on the weight of the shower. EASY TO INSTALL: No tools, no need to disassemble the slider from the shower. shower rod, just enjoy the thoughtful design of this shower slider bracket. The shower holder can accommodate a hand shower up to 2 kg. Note: Please do not overtighten the rotating handwheel and do not use a wrench to tighten. Protective and non-slip design: Built-in silicone pads keep the shower holder in place and protect the shower slide from damage. daily scratches.