This Gov Shelf Bracket Set is made of high-quality solid steel at a thickness of 0.2", which makes it more durable and sturdy. The weight capacity is up to 88LBS per pair. Finished with black powder coated, creating a smooth and matte black surface. Benefit for preventing rust and scratch. Each one is guaranteed to be 90 degrees, ensuring strong withstand. The wall shelf bracket with lip, which aims to lock the board, prevents wood from slipping. Use these black floating shelves and shelf brackets just about anywhere. These black shelf brackets not only decorate your home with a modern style but are also great for adding extra storage space for even the smallest rooms.