FeaturesControlled ink flow systemStainless steel precision tip for smooth writing performanceUnique eye lets you see how much ink is left0.2mm micro fine lineColour - BlackThe Uni-Ball UB-150 Eye Rollerball Pen Fine (Pack of 12) features a fine 0.5mm nib for a 0.2mm line width, which is ideal for detailed work. The pen contains liquid Super Ink, which is fade resistant, water resistant and tamper proof. The unique system provides a continuous flow of ink down to the last drop for smooth, consistent writing. This pack contains 12 black pens.