Heavy Duty Black Bracket - Solid 100% matt black powder coated, handcrafted. It has strong rust protection, corrosion protection, oil resistance, anti-electricity, etc., it makes the shelf bracket not easy to bend and ensures high durability, performance and longevity. Unique Design Style - Arc support structure, diagonal violations do not fall for a long time, so the bracket provides more load capacity. Each pair of heavy duty brackets can carry 330 pounds. If you want to use it for heavier loads, you can install other brackets for floating shelves. Easy to Install - Pre-made holes on each bracket ensure quick and easy installation. Ideal for installation on all drywall, concrete walls, brick walls, plasterboard and wood. Perfect DIY Project - Mix and match different wooden boards with these shelf brackets for your kitchen, living room, study, door, bathroom, office, etc. They are the perfect additional storage solution for your home decor.