Pacific Science - Semi Space-Filling Molecular Model Set

The Semi Space-Filling Molecular Model Set contains a number of differently colored plastic spheres to represent various atom species with holes at specific angles to accept plastic connectors representing covalent bonds. The set allows semi space-filling structural models of over 40 compounds and a graphite crystal to be built. The set also contains a bond removal took, a plastic storage box with four compartments and a lid, and an operation guide.