The high quality marker you think of when buying overhead transparencies. Excellent for any non-porous surface including glass, metal, acetate or plastic. Remove quickly and easily with a damp cloth. Ink resists beading on acetate and resists fading under projector lamps. Use to create semi-permanent, wet-erase templates on whiteboards or transparency film, then fill in information with dry-erase markers. Single red marker with a fine point tip. AP Seal, non-toxic.