- Versatile Compatibility: Our suction cup is designed to securely attach to a variety of non-porous surfaces, including tiles, glass, mirrors, granite, stainless steel, acrylic, and laminate. It features a 7 cm (1.8 inches) diameter, making it ideal for a wide range of applications. - Not Suitable For: Please note that this suction cup will not adhere to grout lines or porous surfaces, such as wood, unfinished marble, wallpaper, natural stone (like travertine), painted walls, or uneven surfaces. - Convenient Storage Solution: The included storage box measures 2.4" x 3.5" x 4.3", providing ample space for taller shampoo, conditioner, and shower gel bottles, keeping your bathroom organized. - Durable and Rust-Resistant: Made from food-grade 304 stainless steel, our product is guaranteed not to rust, unlike chrome-plated options. - Reliable Performance: We stand by the quality of our suction cup with a 1-year replacement guarantee, ensuring you have a dependable product for your storage needs. Use Scenarios: 1. Perfect for organizing your shower space by easily holding shampoo and conditioner bottles on glossy tiles or glass surfaces. 2. Ideal for creating additional storage in your kitchen for spices or utensils on stainless steel surfaces. 3. Great for holding mirrors or decorative items securely on smooth walls without damaging the surface underneath.