Box of 5 chalk pens for writing on{Lien028}, slate boards and{Lien144}. Write on all slate and slateboard surfaces and erase easily with a{Lien104}or wet cloth.
Cylindrical chalk, 1cm diameter and 8cm high. These chalks are very resistant, they do not break at the slightest contact and will last longer.
The chalk is made of calcium carbonate, a non-toxic material.
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