Material:aluminum .Strong Adhesive and Adjust :Dont worry to hear the sound of falling in middle night or hurt your shower head or family from cup holder,the Swivel designed so that convenient to adjust the angle of shower head. Straight and Tilt position in about 90 degrees. .Super Heavy Duty Material :Light weight but Supper heavy duty Space Aluminum better than Engineering grade plastic (ABS) Chrome Vacuum Suction Cup Shower Head Holder, the oxide coating material for shiny chrome finish.,Modern clear designed,Up to 15 pounds. .Seven Advantage: the shower head bracket doesn't need to drill but fix on your wall with waterproof,oil, with Adjustable, With Super Heavy Duty,With Strong adhesive,With Durable,With two hanger Hooks .Easy to Insta: Clean and dry the position. Press the holder. Slide down the lever. Even the whole process can be done in a few seconds The suction works on flat, smooth and no concave and convex surface.such as ceramic tile, glass, smooth wood, smooth metal surface, etc. the others non-smooth surface such as rough wood, emulsioni paint, textured tile. .