Waterman(R) Refill, Ballpoint, Medium Point, 0.7 mm, Blue- (2 Pack) Refill for Waterman Ballpoint Pens Fine Point Black Ink Waterman Ballpoint Refill. sold by the EA The ink in this high-quality refill is smooth-flowing. Long-lasting refill fits WATERMAN ballpoint pens. WATERMAN Ballpoint pens produce flawless lines and never dry out. It's an anytime, anywhere ink that gives free reign to your spontaneous expression.