Trapezoidal NdFeB Magnet
As we all know, naturally, permanent magnet has two poles: N and S. But, however, there are some occasions that need one-pole magnet, that is, magnetism on only one side of the magnets, or else, the magnetism on one side will disturb the other side, or damage the product, or useless to the product. Thus, the one-side magnet can save cost and also magnetic material.