High Quality Materials: These adhesive hooks are made of 304 stainless steel which is durable, rustproof, waterproof and anti corrosion, suitable for many conditions, such as kitchen, bathroom etc. Multi-Scenario Applicability: Suitable for robes, towels, hats, coats, keys, umbrellas, backpacks, handbags etc. Easy to Use: Self adhesive hooks, no need to drill holes. Note: Recommended to use after 24 hours. You can find more details of the installation method in the picture Heavy Duty Hooks: Applicable to the surface of tile, glass, wood, plastic, metal, mosaic and so on Our service: Any questions, please contact our professional customer service team, we will solve the problem for you as soon as possible