Phosphorescent colored chalks, in stick form with dimensions of 12x12 mm. They have good writing properties, do not crumble, and do not stick when removed. Manufactured according to European Safety Standards within the European Union.

• School chalks for writing on traditional blackboards.
• Set includes 6 phosphorescent colors in cardboard.
• Break-resistant, very easy to remove from the board.
• Made from natural and harmless minerals, suitable for everyone, regardless of age.