I used a forstner bit to flush 3 of these magnets evenly spaced on a board 20 inches long, 3/4 thick and 2 1/2 wide, then stainless steel was placed on the other side of the board Steel magnetic knife holder so I can attach my knives to the side of the fridge. Total weight without blade 6 lbs. Magnets will not hold this device. She slid down the side of the refrigerator and stopped when it hit the bottom. Presumably these magnets will hold 24 pounds when pulled but can't hold 6 pounds when sliding? EDIT: I could have been born at night but it wasn't last night. These magnets cannot withstand a vertical pulling force of 12 kg. Basically they are bloated fridge magnets. I bought according to your information in your advertising text. Now I know who you are
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