The Uni Ball 207 Impact Pens SAN65800DZ delivers an ultra-smooth ink flow from a 1.0mm tip. Its Uni Super-Ink provides three-way protection to help guard against water fading and fraud. An innovative spring-loaded clip automatically retracts when clipped onto your pocket.This Uni Ball pen s smooth rubber grip provides superior writing comfort and control. The barrel reveals the level ink supply so you know when to refill the gel pen. The ink in these blue gel pens is free of acid which means that it s suitable for archival and scrapbooking applications. These products leave thick even lines that make the ideal for writing bold and legible text or for drawing the border lines of sketches. The pens have a cap with a clip that attaches to your pocket.