Our all-purpose metal & plastic marking ink - non-porous and film producing. These inks are water clear, abrasion resistant, and produce a strong brilliant fluorescent color under black light activation. These products actually produce a coating that is water clear on the desired object. Applied thin enough you will not even see the coating itself. Our inks are used to mark metal, plastic, wood, concrete, marble, rocks, just about anything where you need a strong, incredibly durable invisible mark. Used extensively for sting operations, ownership, and product proof. See here for other colours available: