Perfect for hanging thick towels, bathrobes, and more in the bathroom or any other area. Ideal for smooth, dry, flat and non-porous surfaces such as glass doors, mirrors and tiles. the , apply the adhesive disc, and attach the suction cup VERSATILE INSTALLATION: These suction cup hooks are designed for easy installation, no drilling or screws required Complementing any decor, it adds of to your space while keeping the essentials within .