Eco-Line is a water-soluble color ink using dye ink, yet it has excellent lightfastness and vibrant colors.
Water-based ink can be blurred with water brush.
It also comes with a specially shaped eyedropper tip that allows you to create works with an eyedropper.
This color ink is widely used by designers, architects, illustrators, photographers, calligraphy enthusiasts around the world.
Colors: Lemon Yellow, Magenta, Sky Blue Cyan, Green, Black, Grey, Orange, Vermilion, Ultramarine Violet, Sepia
(From Amazon.co.jp)