These Crystal Model Sets contain different colored jacks (Red, Black& White) & connectors Long & short) in a prescribed number to be joined together in an illustrated way to form structures like Diamond, Graphite & Sodium Chloride. Material : Polyethylene HSN CODE:- 90230010 Item No. Particulars Packing GSI/PL/58101 Diamond 1 Pc GSI/PL/58102 Sodium Chloride 1 Pc GSI/PL/58103 Graphite 1 Pc