Stic Pens Ltd offers Gel Pen with Water-Proof Ink. Stic Pens Ltd also manufactures various types of ball pens, fine-liners, sketch pens, markers, hi-lighters etc. The Gel Pen with Water-Proof Ink has specially formulated writing system for smooth, vivid and goop-free writing. The Gel Pen with Water-Proof Ink has 0.5 mm tungsten carbide ball. This Gel Pen has ergonomically designed rubber grip for fatigue-free writing. This Gel Pen is refillable and is available in blue, black and red ink colour.