Opticz UV Blacklight Reactive Large Tip Invisible Ink Marker Pen, Red

This UV Blacklight Reactive Red Invisible Ink Large Tip Marker/Pen uses high quality invisible ink. Perfect for identification marking, wall decoration, and other stealthy security uses. Glows an incredible bright red. Perfect for metal, glass, plastics, & paper, etc. Totally invisible, won't wash off easily, and is only visible under blacklight. This is the pen you want for invisible marking. This pen can be used for: Event Tickets, Industrial Coding, Security Printing, Coupons, Raffle Tickets, Inventory Control, Advertising, and more! Safe for skin. Can also be used on: Aluminum, ABS, Acrylic, Rubber, Cellulose, Acetate, Formica, Nylon, Polystyrene, and Polyethylene. Waterproof, once dried & easy to handle, marker comes ready to use and is formulated to fluoresce brightly under long wave ultraviolet lamps. Ideal for applying onto most surfaces Water based. 5.25 long (Bottom to tip of cap) by 1/2 diameter Sunlight, prolonged exposure to fluorescent lighting or continuous high powered UV exposure may cause fading over time.