Product description Material: aluminum Triangle size: 30 * 22.5 * 6cm Four corners size: 32.5 * 13.6cm Color: matt, elegant black Product selection: single-layer triangle / four corners, two-layer triangle / four corners 1. No drilling: powerful adhesive (nail free) for screwless installation, it's strong enough to hold up to 20 pounds without damaging the wall. You can also choose to install screws to hold heavy items up to 50 pounds. Both ways are quick and easy. 2. Self-cleaning waterproof: The design of the drain holes not only supports the dry and neat shower corner shelf, but also prevents the necessities from slipping. Idea for bathroom, bedroom and kitchen, safe for shower stuff, makeup stuff and groceries. 3. Corrosion-resistant and rust-proof: Resistant to corrosion, daily scratches, tarnishing, prints or water stains. Always keep your bathroom beautiful. Ensuring durability and reliability. 4. CONTEMPORARY DESIGN - The timeless look! Matte aluminum and liquid base coat, it can be well matched with different interior styles. Thanks to the slits, the water can drain away and the interior does not become moldy. They are also easy to clean. 5. Multiple Installation Methods - Seamless patch, glue and drilled for easy installation, saving time and effort.