Circuit Scribe is a rollerball pen that writes with conductive silver ink. It makes creating circuits as easy as doodling. No shaking, no squeezing, no goop, no smell, no waiting for ink to dry. Circuit Scribe draws smooth lines with conductive silver ink and allows you to create functioning circuits instantly. You can build a circuit with nothing but a coin battery, paper clip, and LED, or build out complex circuits with multiple components. 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).