Neodymium magnetic cube, 40x20x10mm, nickel-plated, grade N52, magnetized by 10mm (Office supplies & stationery)
I find this magnet well, it meets my needs. Processing and nickel also well done. Also is not easily broken by the nickel plating. Unfortunately, the load capacity of 120 kg is far-fetched. Since I have no instrument, I can only guess: 40-80kg