Tradition and Innovation ! Generation to generation tradition of calligraphy retained ! Master's M-0405 Dual Tip Calligraphy Marker is a combination of one 604 i.e. 1.6 mm at one side and 605 i.e. 2.5 mm at another side providing a dual range of calligraphy strokes. Ideal for Italic, Arabic, Persian and Urdu writing. Chiesel nib calligraphy marker pens 2.5 mm tip creates broad lines whereas 1.6 mm side a little smaller stroke line. Available in Blue and Black colours.