High Quality MaterialThis adjustable hidden shelf bracket is made of high quality cold rolled steel, which is very hard, wear-resistant and corrosion-resistant. The surface is nickel-plated, which makes it rust-resistant. Compared with zinc-plated brackets of the same type, this hidden shelf bracket is more wear-resistant and corrosion-resistant. corrosion. Adjustable DesignThis adjustable shelf bracket allows for vertical or horizontal adjustments. When the slot position of the wooden board does not align with the installation position on the wall, you can adjust it horizontally to align it properly. If the wooden board is found to be uneven during installation, you can adjust the screws at both ends to balance it. Space Optimization and AestheticsThis hidden shelf bracket can cleverly utilize the wall space, increasing the capacity of the room, while remaining hidden in the wall and shelf, without protruding to affect the aesthetics. Wide ApplicationSuitable for supporting wooden shelves, bookcases or wall hanging decorations, optimizing space and decorating the room. Note: The maximum load capacity of two adjustable hidden shelf brackets is 50kg. If you need to hang heavier wooden boards, please use multiple shelf brackets.