Molotow GRAFX Aqua Ink Refill, 30ml bottle, features a special water-based ink which produces vibrant color. It is designed to be used with refillable Molotow GRAFX Aqua Ink Soft liner Brush Pump Markers and Aqua Twin Markers. With 12 refill colors available, you can combine inks to create your own hue. Marker is refillable with an exchangeable nib making the marker a sustainable artist tool. Made in Germany.