Material: Neodymium Magnet
Operating temperature: ≤80℃
Surface: Nickel plating
Ages: 7+ ages, both for kids and adults.
The Neodymium Magnetic surface already has coating protection,please keep in a dry environment if not using.
Supper strong magnets, so please stay away from your electronic products, such as magnetic cards, mobile phone and so on.
4×Strong Disc Magnets 20x5mm