13mm Neodymium Super Strong Button Magnet - Pair
Pair of 13 x 5mm Neodymium super string button magnets. Both magnets have a red line on one side to easily distinguish between North & South poles (positive & negative).
Ideal for a number of uses and commonly used by numismatist to determine the purity of silver coins.
Caution: Adult use only, keep away from children and pets. Avoid electrical devices.