Circuit Scribe Conductive Ink Pen 10 PackOur flagship conductive ink pen is now available alone! Order pens as replacements to use in your Circuit Scribe kits. Draw on any surface a rollerball pen will write on. The Circuit Scribe conductive ink pen can draw 60 200 meters depending on writing surface and speed (60 meters on absorbent surfaces like a napkin, and 200+ meters on photo paper). Photo paper also has other benefits: you can erase ink by scratching a trace away, and you also get the