Invisible Ink Pen Marker 30mm Felt Tip (Refillable) + Invisible Ink Blue 250ml
This pack includes the following items
1 x 30mm Invisible Ink Pen Marker filed with 30ml of Invisible Ink Blue.
1 x Invisible Ink Blue 250ml Jar so you can refill your marker.
Invisible when in normal light conditions. Will become visible when exposed to a UV Black Light or UV torch.
This Invisible Ink Pen can be refilled by undoing the cap at the bottom of the Pen Marker.
Product Features and Specifications