SIZE SELECTION: To maximize load capacity, match the bracket length to the depth of your shelf. Extending the shelf depth increases torque on the support arm. As torque increases, load capacity decreases (lever principle). SPACE-SAVING: These folding shelf brackets require minimal mounting surface and save significant space. Use them to extend workbenches in garages, laundry rooms, kitchens, boats, reception areas, backyards, RVs, BBQ areas, trailers, bedrooms, balconies, bathrooms, and more. Folding them down when not in use maximizes space. EASY INSTALLATION: Even if you're not a DIY expert, installation is simple. The package includes all necessary mounting hardware, high-quality stainless steel screws, and expansion tubes. Just ensure the two brackets are parallel to each other and perpendicular to the wall. STURDY & DURABLE: Made from high-quality stainless steel with excellent corrosion and rust resistance. No coating or painting, easy to clean, with a wire-drawing process to prevent daily scratches and maintain a shiny, new appearance.