With Prang's paper wrapped charcoal pencils, pull the string to remove part of the paper and expose more charcoal - no sharpener needed. The charcoal comes in three grades: hard, medium or soft. Packed in dozen boxes. PMA certified non-toxic
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Uniformly smooth to ensure easy laydown
Soft core, Paper wrapped with easy pull string for self sharpening
Made of select charcoal, finely ground and free of impurities