Used up every last drop of your favorite paint markers? Continue to use them with this convenient refillable ink. The same brilliant water-based acrylic color that you know and love, this ink can be applied to a variety of surfaces such as canvas, wood, glass, walls and metal. Mix and match, creating your own original colors. In addition to refilling your markers, you can use these ink bottles for a wide array of techniques such as airbrush, mixed media and brush applications.