DirectGlow Extra Large Invisible Yellow UV Blacklight Reactive Ink Marker Pen

This UV blacklight reactive invisible yellow ink large tip marker/pen uses high quality semi permanent invisible ink. Perfect for identification

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DirectGlow XL Invisible Yellow UV Blacklight Reactive Ink Marker

Our Opticz UV blacklight reactive invisible ink markers are made with a specially blended high quality water based ink for outstanding blacklight

Opticz XL Invisible UV Blacklight Reactive Large Tip Ink Marker

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DirectGlow Extra Large Invisible Yellow UV Blacklight