Our top-rated pen features a special tip mechanism that prevents ink from drying out. Its water based ink allows for smooth writing and no bleeding through paper. The wide variety of colors makes this pen a staple for stationery lovers. ⚠ Warning: Cancer - https://www.p65warnings.ca.gov/ Measurements: Length: 14.0 cm (Approx. 5.5 ") Nib 0.5 mm (Approx. 0.02 ") Country/Region of Origin: Japan Polypropylene, ABS Resin, Steel. Ink Type: Water based.