Madison Supply, 30 Pound, Strong Neodymium Magnet Hooks, Ultra Heavy Duty Magnetic Hook (3-pack) (30 Pound) Package of 3 magnet hooks for use on refrigerators, file cabinets, toolboxes, steel doors and more. Nickel-plated polish looks great in the kitchen, and is durable enough for the shop Nickel-plated polish looks great in the kitchen, and is durable enough for the shop The 30 lb size is great for heavier objects: Coats, towels, hand tools, etc. The weight capacity is tested by mounting magnet to a .5 inch mild carbon steel beam in a horizontal position Mounting the magnetic hook to thin steel, or vertically, will reduce the capacity by approx. 2/3