Pilot G-Tec-C4 Ultra Fine 0.4mm Gel Ink Rollerball Pen, Pack Of 5 Assorted Colors. Gel pen allows extremely micro fine and ultra fine writing. Innovative ink prevents feathering and provides the smoothest writing every time. Bio-Polymer Gel Ink Formula is also smear proof. Design includes a plastic clip, plastic cap and metal nose cone. Nonrefillable. 5 assorted colors in storage pouch. Colors are: Black, Red, Blue, Green and Purple.