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This ultra-violet formula marks with invisible white ink and cannot be seen until placed directly under a black light. Marker has a medium bullet tip.Permanent oil-based formula marks on plastic, glass, metal, and other non-porous surfaces. Features a non-slip rubber grip, and pocket clip on the cap. Reversible, valve-action nib helps you get the most out of your marker! Find the SKM Water-based UV Marker HERE!.

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UV Marker Pens: This paint marker set has UV ink that glows under a blacklight, perfect for fun hidden details Write on Nearly Any Surface: Sakura

SAKURA Pen-Touch Paint Markers - UV Marker Pen for Black Lights - UV Visible Ink - Assorted Tips Size - 3 Pack

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Invisible Ultraviolet Marker

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