[Product Information]

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• Non-toxic， silver conductive ink pen - Write on any surface your regular rollerball pen will!
• Kit includes 6 magnetic modules to create functional circuits on paper - 2x LEDs， 1x SPST Switch， 1x NPN Transistor， 1x 9V Adapter， 1x 2-pin adapter
• Includes STEM workbook， 9V battery， steel sheet， stencil and accessories
• Resistance is 0.05-0.2ohms/sq/mil (2-10ohms per cm of writing)
• The most successful conductive ink pen - funded on Kickstarter by over 12，000 backers!