Solid metal construction, 2.5mm-thick, heavy-duty design Solid mild steel materials, suitable for all kinds of layer board, shelf, glass, marble, a fixed support, a must-have in a good DIY shelf. Bracket on the wall, just put on a board shelf can become beautiful and generous. Is often used as microwave oven racks, shelves, flower, etc. Still can put the computer in the room, cosmetics, photos, etc. Basics Designer Angle Bracket for Wall Shelves are made of heavy gauge Metal, finished in Ant-scratch textured powder coating for overall sturdiness and life long durability. A power drill is needed (not included). First of all, mark on the location if necessary and drill holes by a power drill. Equipped with mounting accessories include stainless steel screws and anchors. There are four holes on the top of the bracket to install the screws easily.