Material: We use stainless steel material is not easy to rust, strong resistance to pressure, not easy to deformation, and the surface is smooth and not easy to be scratched.Load-bearing: the maximum load-bearing capacity of a single bracket is 20 pounds, but the load-bearing capacity of different materials of the wall will be different, if you need to carry heavier items, please install more brackets, the distance between the shelf brackets will affect its load-bearing capacity.