Class pack markers make it economical and convenient to provide students with all the markers they need. Classic, long-lasting, durable Crayola markers lay down brilliant color and don t bleed through typical paper. Water-based ink doesn t bleed through most paper and can be revived within seconds in warm water if caps are left off. Durable nibs are safely secured in barrels. Versatile 5" x 5/8" markers with conical tips write at any angle. Extended caps offer safety and identify the color of the ink. Markers are certified AP nontoxic and conform to ASTM D-4236. This item has 16 each of 16 colors totalling 256 markers in the Classpack. This item does not have six plastic bins included in the set.