4pcs Floating Shelf Bracket, Metal Invisible Shelf Bracket, Heavy Duty Hidden Shelf Bracket, Invisible Wood Shelf Bracket. These wooden shelf brackets are made of solid galvanized and nickel-coated steel with a matte black powder coat finish. The shelf wall brackets are rust-resistant and durable, ensuring long-term performance. Despite their compact size, these metal shelf brackets offer strong support. The hidden shelf brackets are designed to be installed inside the wall and within the cabinet or shelf. Once assembled, the brackets are not visible, providing a clean and seamless look. Without external brackets, the furniture is easier to clean. To install, use a 0.5 inch router bit to drill a 5 inch long hole in the board, ensuring the 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 shelf furniture a sleek and modern appearance. Specifications: Material: Galvanized solid steel, surface nickel plated with matte black powder coating. Color: Black. Size: 128x20x63mm. Package includes: 4 pcs invisible shelf brackets.