Madison Supply, Strong Neodymium Magnet Hooks (4-Pack)(12 Pound) Qty of four 12 lb. Hook Magnets for all of your medium duty magnet hook needs Nickle-plated polish looks great in the kitchen and office, and is durable enough for the shop The 12 lb size is great for med. weight applications: documents, utensils, medium tools, etc. The weight capacity is tested with a .25 inch mild carbon steel beam in a vertical position Mounting the hook magnet to thin steel, or horizontally will reduce the capacity by approx. 2/3