The hook is made of ABS plastic. Powerful adsorption, sturdy and waterproof.<br> Suitable for direct mounting on smooth, non-porous surfaces, such as glass, mirrors, smooth tiles.<br> Easy to Install, no need to drill or use tools. Turn the knob counterclockwise to release the vacuum. Just wash the suction cup with warm water and air dry it for reuse.<br> Efficient storage in the bathroom, kitchen and so on. Great for hanging towels, decorations, kitchen gadgets, etc.<br> The suction hook is made of ABS plastic, waterproof, long-lasting durability and can be reused.<br> Suitable for direct mounting on smooth, non-porous surfaces, such as glass, mirrors, smooth tiles to hang some small items.<br> Easy to Install, no need to drill or use tools. Turn the knob counterclockwise to release the vacuum. Just wash the suction cup with warm water and air dry it for reuse.<br> Efficient storage in the bathroom, kitchen and so on. Great for hanging towels, bathrobes, decorations, kitchen gadgets, etc.<br> Dimensions: 100 x 55 x 35mm / 3.9 x 2.2 x 1.4 inch (L*W*H)..Items from Sheng Xinshun's shop