FIRST4MAGNETS Ferrite White Painted Clamping Magnet with M6 Hook for Hanging, Holding or Displaying Items 50mm Dia 21.3kg Pull Pack of 20

50mm diameter x 46mm high The internal diameter of the hook is 12mm and is 38mm from the tip of its thread to top Each magnet can support a steel weight of up to 21.3kg vertically from the magnetic face when in flush contact with a mild steel surface of equal thickness White powder coated finish