Standard 90° Folding: To ensure that each shelf bracket can be positioned at 90° to the greatest extent possible, we carry out a rigorous selection process before packaging. The standardized 90° design is the key factor to ensure that the items remain level and will not tip over after being placed. placed on the board. Sturdy and Durable: The shelf bracket is made of thick and heavy duty iron, can hold up to 75kg, will not bend, super durable, corrosion and rust resistant. Adjustment Range: This 0.5cm thick shelf bracket fits shelves with a width of 10-15cm. For Wood, Plasterboard and Concrete Walls: No need to worry about not being able to use our heavy duty shelf brackets on the wall you want. These black shelf brackets can be used on wood, plasterboard and concrete walls. Complete accessories and easy installation: Includes all the necessary screws for different wall mounts. Also includes a level to measure and maintain the balance of the hardware during installation. Backboard not