This is a length of 10mm block neodymium magnets, the surface looks black? That is because it is electroplated with epoxy coating, magnet width and height are 10mm, different customers for its use may not be the same, so the length, width or thickness of magnetization, different magnetic performance levels, coating or magnetization direction corresponding to the price is not the same, so we are not marked, we like to order in bulk and will give you a cheap price.
Three magnetization directions of bar & rectangular neodymium magnets;
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