Brushmarker Pro 11 Basic Colors + Blender - Set of 12Brushmarker PRO's contain 2. 4 ml of paint each. They were produced in the "liquid ink" technology thanks to which they do not change the intensity of color to the last drop and allow to control the amount of paint on an ongoing basis. They are twice as efficient as traditional filter markers. In addition, they are equipped with a Japanese super durable and flexible nylon tip. They contain non toxic paints with an intense dye based color. The colors