A great set for organic and inorganic molecular models. A must have for every chemistry classroom!Kit contents: 8 Carbon, 15 Hydrogen, 4 Nitrogen, 6 Oxygen, 2 Sulphur, 1 Phosphorous, 6 Halogen, 8 metal (4 different types), 1 sp3, 1 dsp3, 1 d2sp3, 30 medium links, 12 long flexible links, 1 instruction leaflet