The Uni Chalk Marker is a non-permanent marker pen, which can be easily removed from chalk boards, windows and other non-porous surfaces, including metal and plastic. With a 1.8 - 2.5mm line width, these markers use water-based paint to create vivid coloured writing with a medium bullet tip, ideal for creating eye-catching displays. These markers are weather resistant, but which can be easily cleaned off with a damp cloth. Non permanent marker for windows, chalk boards, metals, plastics and other non-porous surfaces. Medium 1.8-2.5mm bullet tip. Creates weather-resistant writing.   Contents White Fluorescent Yellow Fluorescent Green Fluorescent Pink Fluorescent Orange Light Blue Red Violet