Rock-Solid Support. Lostronaut’s 16” shelving brackets are forged from a single, mighty piece of 3/8'' thick solid steel. Perfect for countertops, slabs, corbels, braces, mantels, and shelves. Heavy-Duty Hero. Tackle your heaviest mounting project with our powerhouse L bracket. These metal shelf brackets are made from construction-grade steel and have no welds, just pure, unyielding strength. Stylishly Invisible. Make your installations float effortlessly and hold like a champ. Extra strong yet discreet, these shelving bad boys keep everything securely in place while staying invisible. Precision Perfection. Our L brackets for shelves boast a precision-machined 90-degree angle tolerance of just 0.05'. They promise a sturdy and perfect fit, built to impress, and engineered to last. Breezy Installation. Upgrade your space with our sleek black shelf L brackets. Each set comes with all the stainless steel floating shelf hardware you need for a hassle-free installation in no time., Weight: 6.3052206932 Pounds, Manufacturer: LOSTRONAUT