Sturdy and durable shelf brackets are made of solid galvanized and nickel-coated steel with a matte black powder coat finish. These wall shelf brackets resist rust and bending, ensuring a long service life. Despite their compact size, these metal shelf brackets are strong and can support shelves weighing up to 80 pounds.Hidden shelf brackets are designed to fit inside both the wall and the shelf. Once installed, the brackets are not visible, providing a clean, seamless look. With no external brackets, the shelf and surrounding area are easy to clean.For installation into wood, use a 0.5-inch router bit to drill a 5-inch-long hole into the board. Ensure the board is at least 0.8 inches thick. Secure the floating shelf brackets using the two screw holes that align with the wooden shelf, then mount the shelf firmly to the wall.These space-saving shelf brackets eliminate the need for external supports, allowing more efficient use of space and enabling multiple shelves to be installed close together.Ideal for supporting floating shelves, these shelving brackets enhance the appearance of your storage furniture, giving it a sleek, modern, and stylish look.