DirectGlow XL Invisible Yellow UV Blacklight Ink Marker Pen 3 Pack

This discounted 3 pack of UV blacklight reactive invisible yellow ink large tip markers use a high quality semi permanent invisible ink. Perfect for identification marking, wall decoration and other stealthy security uses. Glows an incredible bright yellow in blacklight. 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 semi permanent, invisible marking. Safe for use on skin. These markers can be used for: event tickets, industrial coding, security printing, coupons, raffle tickets, inventory control, advertising and more! Can also be used on: Aluminum, ABS, acrylic, rubber, cellulose, acetate, Formica, nylon, polystyrene and polyethylene normal. Water proof & easy to handle, ink comes ready to use and is formulated to fluoresce brightly under long wave ultraviolet lamps. Ink is non-toxic, fast-drying and non-transferable. Ideal for applying onto an already printed surface. 5.25" long (bottom to tip of cap) by 1/2" diameter.