Even if the magnets have the same size and appearance, they will have completely different characteristics depending on which side of the magnet is the north pole or south pole. The direction of magnetization is determined during the manufacturing process and the material is made, and in the final process the material is magnetized using a magnetizing coil in the direction created according to the orientation. Please check the difference in magnetic domain magnetization direction to determine which magnetization direction is suitable for your intended use.