Built from rugged 1/8" thick steel, these black shelf brackets have a weight capacity from 1,780 lbs. - 2,920 lbs. per pair. They are available in a range of sizes perfect for shelves, countertops, wall-mounted desks, lumber racks and tool storage, in the house, shop or garage. Their ultra-durable semi-gloss painted coating is highly resistant to scratching and peeling.