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Giotto Robercolor

Round white and coloured dust-free chalks for use on slate blackboards. Diameter: 10 mm. Length: 80 mm. Made of real chalk, composed mainly of calcium carbonate, from the Champagne region of France. The chalks are dermatologically tested and slide along the blackboard, creating clean, sharp marks. They do not leave scratch marks on the blackboard. Colours wash off hands and fabrics. Available in the following packs: 100 chalks of the same colour
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