Invisible Shelf Bracket - Black metal brackets with a diameter of 15 x 15 cm made of 1.2 cm and 2.5-4 cm thick wooden boards. Sturdy Shelf Bracket - The wall-mounted cast iron shelf bracket makes it easier to hold and balance wooden shelves. Upgraded Rustic Shelf Bracket - Increase the thickness of the metal support rod to make the bracket more stable. It can support up to 50 kg+. Wall-mounted Shelf Bracket Kit - These hidden shelf brackets made of high-quality metal come with all necessary screws. Black Metal Bracket - The powder-coated finish can improve corrosion resistance and prevent rust.