Itoya Doubleheader Calligraphy Marker black Go to amazon.com Related posts Best calligraphy pen The 15 best calligraphy markers for 2022 FeatureDoubleheader Calligraphy Marker, 1.5mm/3.0mm, Black DescriptionArchival safe, acid-free ink in a double-headed calligraphy marker. One side features a 1.5mm tip, the other a 3.0mm chisel point for a variety of applications.