4pcs Floating Shelf Bracket, Metal Invisible Shelf Bracket, Heavy Duty Hidden Shelf Bracket, Invisible Wood Shelf Bracket Wooden shelf brackets are made of solid galvanized and nickel-coated steel with a matte black powder coat finish. These shelf wall brackets resist rust and bending, ensuring long-lasting performance. Designed to be hidden within the wall and inside the cabinet or shelf, these concealed brackets are not visible after installation, providing a clean, seamless look. With no external brackets, furniture is easier to clean and maintain. To install, use a 0.5-inch router bit to drill a 5-inch-long hole into the wood; ensure the board is at least 0.8 inches thick. Secure the floating shelf brackets using two screw holes that anchor into the wall and fit into pre-drilled holes in the wooden shelf. Once installed, the shelf appears to float, maximizing space efficiency and allowing multiple shelves to be placed closely together. These brackets offer reliable support and enhance the appearance of floating shelf installations. Ideal for decorative and functional shelving, they provide a sleek and modern look. Specifications: Material: Galvanized solid steel, surface nickel-plated with matte black powder coating Color: Black Size: 128 x 20 x 63mm Package Includes: 4 pcs Invisible Shelf Brackets