Daler rowney fw acrylic artists ink large packpack of 12 x 295ml assorted coloursan acrylic based pigmented water resistant ink available in a range of colours all of which have a 4 star permanence rating the strong and vibrant colours can be substantially diluted to achieve the most subtle of tones very similar in character to watercolourthey can be applied via airbrushes technical pens or traditional brushes colours included as followswhite black indian process cyan marine blue