[20.32 cm Shelf Brackets]:20 pcs pack of 8 x 6 inches (approx. 20.32 x 15.24 cm) metal shelf brackets with 130 pcs 3x20 mm screws, designed for 6 to 9 inches (approx. 15.24 - 22.9 cm) wide boards, can fit 8 inches (approx. 20.32 cm) wide boards perfectly. Weight Capacity:Our heavy duty ferrous metal shelf brackets can hold up to 100 lbs (approx. 45.4 kg) per pair, thickened steel design, reinforced right angle brackets are more sturdy and durable. Easy Installation:Each L Shelf Bracket comes with pre-drilled screw holes to guide you through the entire process, allowing for quick and easy installation of the L brackets. [Widely Used]:Shelf brackets with various wood boards can be widely used in garage, kitchen, store, bathroom, laundry room and so on. 6 Sizes Available: In order to meet the different needs of customers, we offer 6 different sizes of floating shelf brackets, which provide more choices than other products. Please choose the wall shelf bracket according to your board width.