This molecular model set is priced to allow each student to make his or her own models. In addition to the elemental models (Hydrogen, Chlorine, Oxygen, Nitrogen), students can construct models of hydrides, halides, metal oxides and hydroxides, non-metal oxides and acids, and salts. Comes complete with clearly illustrated instructions. The individual set is packaged in a plastic storage bag. The package of six sets comes with a plastic storage box and six separate bags.