ChalkTalk Marker Pens, 8 Pen Box Set, Guaranteed, 6mm Felt Chisel Tip, Quick Dry, Wet Wipe Erase, Fluorescent Neon for Glass, Mirror, Window, LED Display, White or Blackboard Set of 8 Brilliant Neon Colour Pens. Great for writing your advertising message on mirror, glass under black light, glossy white or black board Though brilliant and thick in colour the markings are easily erasable with a wet paper towel. The chalk ink is scentless and made from pigment, resin and water and is certified (EN71 and ASTM-D4236) safe and non toxic. The fluorescent ink in the markers fluoresces and scatters the light transmission and creates a bright and colourful display For menuboards and all non porous writing boards as seen in restaurants, shopping malls, coffeeshops, bars, nightclubs Fluorescent Ink menuboards typically have a black background...