VISION Stick Roller Ball Pen, Micro 0.5mm, Black Ink, Black/Gray Barrel, Dozen Features. Classic rollerball pens produce smooth strokes. Uniflow Ink System regulates a steady flow of ink for smoothness and color intensity. Archivalquality, acidfree ink for documents and record keeping. Quick drying and waterresistant. Barrels with visible ink supply. 1 DozenSpecifications. Global Product Type PensRollerball Pen. Pen Style Stick. Pen Type Roller Ball Pen. Refillable No. Pen Point Size Type Micro. Pen Point Size 0.5 mm. Pen Ink Color Black. Color Family Black. Pen Barrel Color Black/Gray. Pen Cap Color Black EndCap. Special Ink Type Waterproof. Pen Tip Type Conical. Pen Grip Type Smooth. Visible Ink Supply Yes. Pocket Clip Yes