Chalk made with magnesium carbonate of the highest quality, the big difference between chalk powder is that this is compacted with more strength, forming a heavier and leaner block and it is much easier to transport in backpacks or bags, avoiding the disintegration of the same during transport.
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It is much more durable than the chalk powder since it does not wear out so fast. In addition, it is divided into 12 small blocks with the perfect measure.
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