Invisible Ink Pen (Extra)

These are invisible ink pens - they write in invisible ink, and have a little UV light on the back to read what you write.  You'll get one for free with most purchases, but some people want extras - this is for them.

We have both 395 nm (silver body) and 365nm (black body) pens in stock, with our website written on them.  It'll be either Turtleshoard.com or Gemsofscience.com, luck of the draw.