One of our most popular items, the water based ink in this pen allows for smooth writing and no bleeding through paper. The tip of the pen uses a mechanism to keep ink from flowing in the other direction and drying out. Comes in a wide variety of colors. ⚠ Warning: Cancer - https://www.p65warnings.ca.gov/ Measurements: Length: 14.0 cm (Approx. 5.5 ") Nib 0.38mm (Approx. 0.01 ") Country/Region of Origin: Japan Polypropylene, ABS Resin, Steel. N/A