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 durability. Despite their compact size, they offer strong support. The hidden shelf brackets are designed to be installed within the wall and inside the cabinet. Once assembled, the brackets are not visible, providing a clean, seamless look. Without external brackets, the furniture is easier to clean. To install the hidden brackets, use a 0.5-inch router bit to drill a 5-inch long hole in the board. Ensure your board is at least 0.8 inches thick. Secure the floating shelf brackets using two screw holes and fit them into the wooden floating shelves, then mount the shelf on the wall. When used for decorative shelves, these brackets help save space by eliminating visible supports, allowing multiple shelves to be installed close together. These shelf brackets provide reliable performance and are ideal for supporting floating shelves. They give your shelf furniture a sleek and modern appearance. Specifications: Material: Galvanized solid steel, surface nickel-plated with matte black powder coating Color: Black Size: 128 x 20 x 63mm Package Include: 4 Pcs Invisible Shelf Brackets