Tombow's ABT Pro is a dual ended brush marker. In a slim case, one end has a fine brush tip for line work and a broad chisel tip makes light work of larger areas. Nylon tips give flexibility to the brush which will retain its shape after use. Alcohol-based inks give strong, smooth and streak-free blocks of colour. These colours can easily be layered to produce effects and shadows. Cool Grey Colours, set of 5. Alcohol-based marker. Streak-free drawing. Colours can be layered. An ideal choice for illustration, manga and comics, design sketches and many other activities.