I have the magnet used as a door handle on my fridge. To give you an idea of the magnet strength, sometimes the magnet will pop off of the door, rather than open it. Yeah, nowhere close to 400lbs, more like 40ish I'd wager.
Super Strong 650Lb Neodymium Fishing Magnet Kit - Ideal For Magnetic Fishing In Rivers, Indoors, And Outdoors - Large 2.95In Diameter (75Mm)
21 Review
πͺ MHDMAG 960lbs Super Fishing Magnets: The Ultimate High Power Magnet Fishing Kit with Neodymium Rare Earth Magnet for River Retrieval, Magnetic Fishing, and More! (Diameter 3.54in / 90mm)
24 Review
IMT 10" Heavy Duty Glass Suction Cup With Handle - Perfect For Granite Lifting, Window Replacement And Panel Carrying - 265Lbs Load Capacity, Free Case Included
27 Review
Heavy Duty 240Lbs Load Capacity IMT 8 Glass Suction Cup With Metal Handle & Free Carrying Case
38 Review