24 Boxes per carton MST: 39X23X28CM G.W.: 25KGS N.W.: 24KGS CHALK:1. Passed EN71, ASTM D-4236 & REACH2. Non toxic, white color ... latest and advanced material prescription, So as a result of bright color, clear marks, uneasy broken, with less dust, Suitable for teaching ... other works.5. Packing details: Color box Specification: 9.5X80MM 100 pcs/box, 24 boxes/carton Carton size: 39 x 23 ...