DSPIAEFountain Pen Aluminum Pen Marker for Plastic Model

Depending on what you plan to use this for, it can be extremely useful. A few things to note, if you are not moving quickly, the panel liner can quickly dry on the tip making it not flow properly. Be sure to clean the tip often to ensure it flows properly. The only downside is, I wish it came with a second tip. They can be purchased but having 1 included would have been nice.