Watersoluble ink blocks that bring a new sense of freedom to the drawing and painting experience, Derwent Inktense Blocks can be used dry or wet. Dry, they deliver pure, vibrant color. When wet, they create a translucent ink-like paint that can be worked over when dry. - Derwent Inktense Block Set - Set of 12Colart Derwent Inktense Blocks, 12/CT TIN - This set of 12 Derwent Inktense Blocks includes one each of the colors Sun Yellow, Tangerine, Poppy Red, Fuchsia, Deep Indigo, Sea Blue, Teal Green, Apple Green, Leaf Green, Baked Earth, Bark, and Ink Black.