Package Contents: 4 x 5 inch black floating shelf brackets, 8 x solid screws, 8 x wall anchors. Sturdy and durable: Our blind shelf brackets are made of high-quality thick cold-rolled steel, and the surface is painted, which is very strong and has good rust resistance. Invisible design: The hidden floating shelf can perfectly transform the old recycled barn beam into a floating shelf, which not only improves the flexibility of the space, but also adds beauty to your favorite home and a modern and elegant look. Suitable for many occasions: These floating shelf brackets are suitable for living room, background wall, bedroom, study, bedroom, store, corridor, garage and balcony, etc. Also very suitable for DIY enthusiasts to install.