Durable Metal Quality: Made of durable low-lead brass, offering high hardness, strength, and durability for long-lasting use. Function: Adjusts shower arm height for easy access by moving the shower head. Bathroom Convenience: This shower arm features a solid, modern look, allowing you to hang your shower arm at the ideal position. Easily adjust the height for children or adults. Stylish Design: A beautiful and elegant addition to any modern bathroom decor. Rust and corrosion resistant for bathroom and toilet use. Black Plated Finish: Exquisite appearance, not easily scratched. This black shower holder matches dark black/matte bronze faucets, shower mixers, and other bathroom accessories. Specifications: Style: Modern Faucet Type: Shower Head Holder Installation Method: Wall-mounted Features: All copper material, thick precision electroplating, withstands 24-hour salt spray test, hardening and corrosion resistance Color: Black Installation Method: Wall-mounted Shape: Square Material: Brass Note: Conversion: 1cm = 10mm = 0.39inch Note: Photography lighting and different displays may cause a slight difference between the objects in the picture and the actual objects, and the allowable measurement error is +/- 1-3 cm. Note: Due to different computer resolutions, there may be some color distortion. Due to different manual measurements, there may be small errors.