Montana Acrylic Markers feature water-based brilliant pigmented, acrylic matte colors that are compatible with and match the colors that are available in the Montana Gold spray paint range. The optimum flow control pump valve system allows accurate handling and application. This 0.7mm extra-fine nib is the best choice for fine detailed work. The ink is lightfast, water-proof and abrasion-proof allowing application to almost any surface including canvas, wood, metal, walls and glass. The ink is also ideal for brushwork and airbrush. Details:Available in multiple colors0.7mm extra fine nibRefillable with replacement tips availableFor interior and exterior use