School chalks. White, compact chalks of high quality, which do not create dust because they are made mainly from natural raw materials (98% calcium carbonate).

• Round chalks
• Facilitate writting, provide sharp and legible outlines
• very ease to erase when dry and very resistant
• They will not scratch the board
• Soft for writing and drawing
• They cover well
• They leave a small residue of dust on the hands
• Very soft to the touch
• Easily removed with water from surfaces where applied.