Circuit Scribe Non-Toxic Conductive Ink Pen for Kids Circuit Building Set (10-Pack) Silver Ink Rollerball Point Pen Kit, Science Experiments, DIY Science Projects (New & Improved Formula)

Our 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 highest conductivity on this surface (<2 ohms/cm).Soldering to the ink is possible - but tricky - and greatly depends on paper/surface type and solder type.Pack of 10 pens.'