Iron Cabinet Shelf Organizers - Made of sturdy metal, Thicken the powder coated, strong rustproof, The smooth surface of the cabinet shelf has been polished so it does not wear out easily. There is a load-bearing rod in the middle of this shelf that is evenly balanced so it doesn't collapse inward.  Expandable Cabinet Shelf Organizers - Expandable shelf organizer can vary from 14.1 to 23.6inch in length depending on how you want to arrange your space.  In addition, there are two different height（7 or 9inch) options to give you more flexibility when storing kitchen items.Easy to Assemble - Please read instruction before installation. The stackable counter shelf organizer are required to complete the installation with only a few screws. It should take less than 5 minutes to assemble. The bearing capacity is strong, up to 60LB.Multi-purpose Use -This shelf will double your space! It can be used in various places in your home, including kitchen cabinets, desks, pantry, bathroom cabinets, closets, countertops, under sink and any table surfaces that needs extra space to maximize storage and organization. You may use the shelf as a storage organizer for plates, cups, dishes, pots, bowls, snacks, books, magazines and more.Note - Please align all the screws with the screw holes and then tighten them one by one. Do not tighten one directly then align and tighten next one, this may cause the following screws to fail to align with the screw holes.