The Doubleheader Calligraphy Marker provides performance when two lines are better than one! Two chisel points give the option of thick or thin lines: a wide point (3.0mm) for bold, distinctive lines and a thin point (1.5mm) for smaller, intricate designs. Water-soluble, acid-free ink. Set contains acid-free markers in an assortment of 6 vibrant colours: Black, Blue, Green, Pink, Purple & Red.