Liquitex Professional Paint Markers use a proven ball and pump valve system to optimize paint mixing and flow. The 8mm nib (line width 2-4mm) shape provides the flexibility to achieve multiple line thicknesses and the high quality replaceable nibs ensure precision control on application. With a water-based acrylic formulation Liquitex Professional Paint Markers have been specifically developed for maximum compatibility with other Liquitex products. Versatile enough for use on almost any surface, use together with Liquitex Heavy Body, Soft Body or Spray Paint and finish with a Liquitex varnish for a bleed-proof finish which is both permanent and durable. With a color offering that rivals all others, Liquitex Professional Paint Markers are available in 50 vibrant colors that match the Liquitex spectrum found in Heavy Body, Soft Body and Spray Paint. Using only the highest artist grade pigments to ensure maximum lightfastness and permanence, this broad spectrum includes the opaque colors demanded in paint markers as well transparent, fluorescents and iridescents to offer limitless creative possibilities.