Solid back for improved stability. The solid, closed back distributes force evenly and provides a reliable grip – preventing the point load that occurs with hollow backs. No drilling required – no damage to the wall. Self-adhesive mounting without drilling or screws. Protects tiles, glass, and other smooth surfaces, perfect for rental properties. After installation, wait 24 hours before loading the hook for optimal adhesion and a secure fit. Suitable for smooth surfaces. Adheres reliably to clean, smooth, and dry surfaces such as tiles, glass, or metal. Not suitable for rough, porous, or uneven walls (e.g., plaster, wallpaper, textured surfaces). Reliable everyday grip: Securely holds towels, dishcloths, or light bathrobes on the wall with proper mounting and surface preparation. For bathrooms and kitchens – Set of 6 practical, water-resistant, self-adhesive stainless steel surfaces – Suitable for damp areas. Package contents: 6 compact self-adhesive hooks.