N42 Neodymium Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Science, Office and Home 5mm dia x 4mm thick 0.86kg Pull Pack of 20

Pack of 20 - 5mm diameter x 4mm thick +/-0.1mm tolerance - Each magnet's north and south pole are on opposite 5mm diameter faces Each magnet can support a steel weight of up to 0.86kg vertically from the magnetic face when in flush contact with a mild steel surface Excellent resistance to demagnetisation Each magnet is coated with three layers of nickel, copper and nickel to give superior corrosion resistance and provide a smooth and clean finish