The Tombow ABT Dual Brush Pen is a water-based brush pen with two tips: a flexible nylon brush tip and a fine polyester tip. The line width of the brush tip varies depending on the pressure applied and can be up to approx. 10mm. The polyester tip with a line width of approx. 0.8 mm is perfect for fine lines. Due to the water-based ink, colors can be mixed with each other and blended with water to create wonderful watercoloring effects and color gradients. One ink tank provides long-lasting use of both tips. The Tombow ABT Dual Brush Pen is available in 107 colors + blender and different sets. The versatile pen is especially suited for hand lettering, watercoloring, bullet journaling and much more. The ink is odorless and not lightfast.