Artline 400XF Paint Marker has a crush resistant aluminum barrel and a pump valve action paint flow control to ensure consistent output. Available in vivid colors with an acrylic fiber bullet nib with a 2.3mm writing width. Artline 400XF Paint Marker contains a solvent based ink which is Xylene free, are fast drying, highly water and fade resistant and are ideal for both indoor and outdoor use, suitable for use on metal, glass, plastics (not EPS), ceramics, wood, rubber and laminates. these markers are perfect where indelible marking is required and they are extremely weather resistant.