The strong and durable wood shelf brackets are made of solid galvanized and nickel-plated steel with a matte black powder coat finish. These wall brackets for shelves will not rust or bend, ensuring a long service life life. Although these are small metal shelf brackets, they are sturdy brackets that can support shelves weighing up to 80 pounds. The invisible and hidden shelf brackets are designed to be installed on walls and shelves. Once assembled, the hidden shelf brackets are not visible. Without external support, the furniture is easy to clean. Easy to install To hide the small bracket in the wood, use a router (0.5 inch drill bit) to drill a 5 inch hole in the board. Make sure your board is thicker than 0.8 inches. Mounting Brackets The floating shelf goes through the two screw holes and the holes of the wooden floating shelf, and then install the shelf on the wall. Space Saving If you use these decorative shelf brackets, they can save even more space since there are no brackets