50mm x 12mm x 5mm (2" x .5" x .25"), Alnico V, very strong.
If a bar magnet is suspended freely on a string, it will align itself in a north and south direction. The pole of the magnet that will always swing toward the north magnetic pole of the earth is called the north-seeking pole or simply the NORTH POLE. The other pole of the magnet is the south-seeking pole or the SOUTH POLE.