**Feature** 100% made in the USA from cap to glass to ink Archival quality 4.5oz. Bottle For vintage or new fountain pens 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 comes with a free fountain pen. Heart of Darkness is completely bulletproof， eternal， forgery-resistant and water-resistant. Durable and intensely black.