No. 1. Selling gel pen (Source: No. 1 Selling Gel Pen, NPD. Data on file). Proven No. 1 longest writing vs average of top gel ink brands (Independent ISO testing: Average of G2 write out (all point sizes) compared to the average of the top branded gel ink pens tested (all point sizes). Data on file). Comfort grip. Super smooth. Refillable. America's Go-2 Gel Ink Pen: Super Smooth Writing: Featuring pilot's unique gel ink formula. Longest Writing Gel Ink Pen (Independent ISO testing: Average of G2 write out (all point sizes) compared to the average of the top branded gel ink pens tested (all point sizes). Data on file): Writes longer providing exceptional value. Comfortable Rubber Grip: Contoured design fits your hand. Refillable for Continued Use: Use the G2 refill. Archival safe. Acid free ink. Available in four point sizes with assorted ink colors. www.pilotpen.us. Assembled in USA.