Colorverse Ink Season 2 – Astrophysics features 7 two-botte sets. Each set comes with a 65ml and 15ml bottle of the same color fountain pen ink, making these colors convenient for the office, home or travel. Astrophysics includes No. 13 Quasar (65ml+15ml same color), No. 14 Supernova (65ml+15ml same color), No. 15 Gravity Wave (65ml+15ml same color), No. 16 Andromeda (65ml+15ml same color), No. 17 Vortex Motion (65ml+15ml same color), No. 19 Redshift (65ml+15ml same color) and No. 20 Black Hole (65ml+15ml same color). Explore the Universe in color with these unique fountain pen inks.