Excellent QualityThe invisible shelf brackets are made of high quality solid iron with a thickness of 3mm and a maximum load capacity of 30KG/80LB per pair when correct installation is ensured. Smooth edges, sturdy, oxidation-resistant, rust-proof and durable. Unique Design StyleOur invisible shelf brackets have a matte black appearance that can create a rustic style for your room. The fine brushed surface improves corrosion and rust resistance and gives it an elegant and shiny finish; the fine smooth edges make it safer and protect your hands well. Wall DecorationThe metal shelf brackets make good use of the available space on the wall and help keep the room clean, elegant and beautiful, and are suitable for all interior styles. Ideal for displaying potted plants, books, toys, ornaments and crafts. You Will Receive4 black 8cm shelf brackets, 24 screws of different sizes, 8 long screws, 8 short screws and 8 wall plugs for 8-10 cm wide wooden boards, immediately perfect for mounting on wooden or concrete walls. If you want to use the floating shelf for heavier loads or the floating shelf is too long, you can add more brackets to it. Application ScenarioBlack matte polished surface, the heavy industrial shelf bracket is suitable for bedroom, living room, kitchen, hallway or bar, hotel, etc. Minimalist black industrial design brings unexpected effects to your interior. Specification Material: Iron Quantity: 4 Color: Black Thickness: 3mm Bracket size: 80 /140/170/230 mm Mounting screws included