Sunstar Stationery Large Capacity Gel Ink Tank 3-Color Set Black, Red, Blue ZEBRA Mild Liner Mildliner Gentle Mild Colors, 5 Colors Line Marker, Broad and Fine, Double-Sided Water-Based Pigment Bonus 1 Ballpoint Pen The ink level is not visible, but I am selling these because I tested them and the colors were not what I expected.