Material: aluminum Triangle size: 30 x 22.5 x 6 cm Four corner size: 32.5 x 13.6 cm Color: stylish matte black /> Product selection: single layer triangle / four corners, two-layer triangle / four corners 1. No Drilling: Strong adhesive (nail-free) for screwless installation, it's strong enough to hold up to 20 lbs without damaging the wall. You can also choose to install screws to hold heavy objects up to 50 pounds. Both ways are simple and quick. 2.Self-cleaning waterproof: The design of the drainage holes not only supports the shower corner shelf dry and tidy, but also prevents the necessities from slipping. Idea for bathroom, bedroom and kitchen, safe for shower, makeup and food. 3. Corrosion Resistant & Rustproof: Resistant to corrosion, daily scratches, tarnishing, printing or water spots. Always keep your bathroom beautiful. Ensuring durability and reliability. 4.CONTEMPORARY DESIGN The timeless look Matte aluminum and liquid base, it can match well with different interior styles. Thanks to the slits, the water can flow out and they do not mold inside. Plus, they're super clean. 5.Multiple installation methods Seamless patch, glue and drilled for easy installation, saving time and effort.