The Tombow AirPress pen uses black ink. The pen is equipped with a unique hydraulic system, which allows you to write anytime, anywhere: upside down, at temperatures as low as -5°C and on damp paper. The rubber grip allows a smooth and firm grip in the hand. With the clip you can attach the Tombow pen to papers, clothing or a bag. The casing of the pen is transparent.
With the Pentel Dual Metallic rollerball pen you create an extra special effect: the text appears violet or metallic blue, depending on the incidence of light and the viewing angle. Also, the colors appear different on light and dark paper. The pen has a writing thickness of 0.5 mm and is equipped with a handy clip, with which you can easily attach the pen to a notebook or notepad.