This set of seven models illustrates the most common atomic and hybridized molecular orbits. Each model is assembled on a vertical rod representing the z-axis and is mounted on a removable stand. Orbits represented include s, px, py (same model), pz, sp, sp2, and sp3. Height is 23cm, base diameter is 10cm, and lobes are 6-10cm in diameter.Shipping weight: 3.75 lbs., Dimensions: 18" x 14" x 12".