This set of seven models illustrates the most common atomic and hybridized molecular orbits. Each 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, sp1, sp2, and sp3. Height is 23 CM, base diameter is 10 CM, and lobes are 6-10 CM in diameter. Shipping weight: 3.75 Lbs., dimensions:18" x 14" x 12".