Wooden shelf brackets are made of solid galvanized and nickel coated steel with a matte black powder coat finish. These shelf wall brackets won't rust or bend, ensuring a long service life. Although they are small metal shelf brackets, they are sturdy brackets. Yeuri Hidden shelf brackets are designed to fit in the wall and in the cabinet. shelf. After assembly, the hidden shelf brackets cannot be seen. Without the bracket outside, the furniture is easy to clean. To hide the small brackets in the wood, please use a router bit (0.5 inch bit) to drill a 5 inch long hole in the board. Make sure your board is thicker than 0.8 inches. Fix the floating shelf brackets by two screw holes and holes in the wooden floating shelves, then the shelf is mounted on the wall. If you use these brackets decorative shelves, they allow you to save much more space since there are no supports on the outside. So you can install many shelves nearby. These scaffold plank brackets have better percompatiblemance. Decorative shelf brackets are ideal compatible supporting your floating shelves. The shelf brackets make your shelf furniture look pretty and fashionable. Specifications: Material: Galvanized solid steel, surface nickel plated with matte black powder coating Color: Black Size: 128*20*63mm. Package Include: 4 Pcs Invisible Shelf Brackets