Kuretake Zig MS34004V Zig Memory System Calligraphy Marker Calligraphy marker set features a dual tip with narrow 2.0-mm and broad 5.0-mm ends Ideal for making beautiful letters, borders and designs on paper crafts The water-based pigment ink is photo-safe, acid free and lightfast This package contains four markers in assorted coordinating colors Imported and conforms to astm d4236 standard