Made of coated heavy metal, structurally very strong. Perfect for organizing plates, cutting boards, bakeware, cooling racks, pots & pans, serving trays, and reusable containers. The 7 dividers adjust in increments of 0.43 inch to securely hold various sizes of lids. Keep your cabinets orderly, it is good for smaller or busy kitchens, counter top, cupboard or even under the sink. No installation required, just insert the dividers into the frames and you’re ready to go. Always within reach, no more hassle from cluttered, tangled cookware.