• The kit consists of Darling's basic Molecular Vision kit with a few additional pieces, so that p orbitals could be shown in molecules like acetylene.
• This customized kit also has pieces that allow linear geometry for the sigma bonds of alkynes while also having orthogonal connections at each atom for the associated p orbitals.
• By attaching balls of the right colors it is possible to show the lobes of the p orbitals that make up the pi bonds in an alkyne.
• Ball colors can be matched symmetrically to show in-phase orbital overlap, or antisymmetrically to show an antibonding state.

Comes with Molecular Modeling Handbook, storage box, Guide to Framework Molecular Modeling and modeling pieces.