16 Boxes per carton MST: 38.2X31.2X26CM G.W.: 12KGS N.W.: 11KGS CHALK:1. Passed EN71, ASTM D-4236 & REACH2. Non toxic, white color, assorted colors, colors can be adjusted3. Normal quality and competitive price4. The chalks are shaped by the latest and advanced material prescription, So as a result of bright color, clear marks, uneasy broken, with less dust, Suitable for teaching, leaning, road ...