Universal One Roller Ball Porous Tip Stick Pen, Black Ink, Medium, DozenThe smooth writing action of this porous-tip rollerball pen makes it a pressureless pleasure to use. Precision tip produces consistent, clean lines. Vividly colored ink tastefully draws attention to itself. Marks and lines are quick-drying to reduce the possibility of smearing. Point Size: 0.7 mm; Point Type: Medium; Ink Color(s): Black; Pen Type: Roller Ball.