HEAVY-DUTY STRUCTURE: Triangle shelf bracket is made of cast iron. Heavy-duty construction creates a sturdy piece, stronger than steel ones. Holds up to 70 lbs/pair. If you want to use them for more load you could use more those brackets for floating shelves. L shape structure of stable right angle, easy to make level and get rid of wobbles.,MULTIFUNCTION USE: 5" brackets(5"x3 1/2"), suitable for 5" - 6" deep shelves. The utility shelf brackets usually were used as a bookshelf, exhibition stand, external wall brackets, garden shelves in the garages, basements, storage rooms, stores, offices, and factories. The shelf bracket with a heavy-duty design is suitable for DIY open shelving adds a nice look for your house.,EASY INSTALLATION WITH ALL HARDWARE: Equipped with mounting accessories include stainless steel screws and anchors. There are four holes on the top of the bracket to install the screws easily. TIPS: A power drill is needed (not included). First of all, mark on the location if necessary and drill holes by a power drill.,SPACE SAVING: The floating shelf bracket helps create more space of wall for storage or display in any room. Suitable for small places and make it tidier.,100% SATISFACTION SERVICE: We have a professional customer service team will provide satisfactory products and services. Please purchase ETECHMART product with confidence.