**Feature** 100% made in the USA from cap to glass to ink Archival quality 1oz. Bottle For vintage or new fountain pens Smooth - dark black ink Noodler's Ink is 100% made in the USA from cap to glass to ink. Archival quality ink in large 4.5oz. eye dropper bottle for vintage or new fountain pens. This smooth， dark black ink is also Bulletproof， eternal， Forgery-resistant， Water-resistant， and Freeze-resistant.