NOTE - Universal no drill curtain rod brackets are suitable for smooth surfaces (e.g. tile, metal, glass, wood, marble, stainless steel), for rough surfaces, please use screws to fix them (e.g. drywall, concrete wall, stucco wall, wallpaper) Nail Free Curtain Rod Hooks - Crafted with premium waterproof material and anti-slip spring lock, securely holds 5/8"-1.5" rods. Black finish blends with modern bathrooms/bedrooms/kitchens decor. 3M Adhesive Universal No Drill Curtain Rod Bracket - Peel & stick adhesive works instantly, reaches full strength in 24hrs. Includes detailed installation guide for maximum adhesion. Multi-Space Application - Functions as towel racks/kitchen hooks/bedroom hangers. Organize curtains/shower curtains/towels without damaging rental apartments/dorm rooms.