Each pack contains 12 flat pink and purple orbitals to represent p-orbitals (6 pink, 6 purple). Each fits directly into an appropriate hole on atoms.
You might use these, for instance, to represent a p-orbital using two holes in a five hole carbon atom (available separately). Use the pink and purple parts to represent wave function phases. This pack contains parts to represent the six p-orbitals involved in the π-bonding of a benzene ring.