Molecular Model Set (Organic) -Contain 50 atom & 74 links 20pcs hydrogen (l), 12pcs carbon (lV), 6pcs oxygen (ll), 4pcs nitrogen (lll, lV), 2 sulphur (lV, Vl), 1 phosphorus (lV), 4 halogen (l), 1 metal (l) Links: 32 medium (grey), 16 long flexible (grey), 26 short (white), 1 short link remover tool