Uni-ball Gelstick Smooth, dependable gel ink and contemporary styling come together for a great looking, great writing pen with the Uni-ball Gelstick. And with the wide array of colors, your company's logo is sure to be noticed. The Uni-ball Gelstick - bringing value to a new level. Ink color matches trim color. White barrel has black ink Non-refillable, 0.7mm tungsten carbide ball delivers a 0.4mm line width. Fade proof, waterproof, pigment ink for a permanent mark. uni-ball Gelstick can be customized with a one-color imprint on the barrel or a multi-color imprint on the cap. WRITING INK IS THE COLOR OF THE PEN!!!!