One 2 oz bottle of Speedball Black India Ink. I find this smooth flowing ink to work best with my glass ink dip pens. Simply dip, let the nib drip until no more drops form on the tip (2 to 3 drops typically), and write. To clean the nib, simply rinse with water. If the ink dries on the nib, alcohol can be used. I generally use an old toothbrush to clean in between the ribs of the nib.