Installation： 1.Mark where you want to installation on the wall  2. Drill holes on the wall 3.Embed the board anchor. 4. Fix the shelf with screws. Note: Please buy extra screws and board anchors according to the length, weight, and use of the shelf!  Specifications: Color: White/Silver/Black Hole: 6 mm  Material: Steel + Baked Black Paint Angle Degree: 90 Degree 7 Size : 8/10/12/14/16/18/20 inch Maximum load: 120 lb Package included: 2 x Triangular folding bracket with Screws ( Not including Board ) The folding shelf brackets are made of premium stainless steel and adopt surface brushed treatment and baked painting treatment which ensure its durability and hard-wearing. Thickened support pole make it stronger and more durable ; broadened base (compared with others) to make it more sturdy and stable. Bracket with hinge function, lock at 90 degrees when open,press lever to release the lock. you can Pop it out when need it and fold it away to save space, which makes your home more clean and tidy 3 colors (white /silver/black ) and 7 size (8/10/12/14/16/18/20 inches ), 120lbs/54kg bearing capacity. The excellent stability guarantees your safe use. Come with mounting accessories, it is easy to mount and fold. These folding brackets are ideal for samll spaces such as bookshelf, kitchen shelf, exhibition stand, garden shelf, external wall bracket etc