Smooth tile, marble, tempered glass, wood wall, and solid metal is suitable for installing this bathroom shower organizer. Suitable for bathroom, toilet, kitchen, powder room, etc. Wallpaper wall, stucco wall, lime wall, or the concrete wall is not recommended. No tools or drilling is required. Mark where the adhesive will be place with shower shelves attached, stick the adhesive and mount the shelves. Corner shower caddy fits 90° right angle corner. Take fully advantage of corner space. Waterproof adhesive stick keeps your shower organizer stable. Adhesive bathroom shower wall shelf is more durable and sturdier than the suction cup. L-shaped design make corner shower caddy hold more and can better accommodate heavy containers (shampoo, conditioner, body wash, and other items) without trouble. Coming with 12 hooks for brushes, sponge, razors, shower rack could find a home in the corner of a bathroom vanity or in kitchen. Rebrilliant Finish: Black