A molecular model set perfect for studying organic chemistry. I believe it has everything. Although it hasn't been used much, the case is dirty due to aging. There are some notes written on paper. - Brand: MARUZEN - Model Name: HGS Molecular Model - Contents: Organic Chemistry Student Practical Set - Set Contents (Reference: At the time of sale) H balls x 30, C4 balls x 30, C5-20 balls x 14, O4 balls x 4, N4 balls x 4, N5-20 balls x 2, CL4 balls x 4, m14 balls x 2, Bond 2 x 30, Bond 4 x 16, Bond 6 x 40, Bond 7 x 6, Bond 10 x 16, Atomic orbital plates (green) x 6, Atomic orbital plates (blue) x 6 Thank you for looking.