Pigma Micron Pen Black .30mm XSDK00249 – GE Designs
Amazon.com: SAKURA Pigma Micron Fineliner Pens - Archival Black and Colored Ink Pens - Pens for Writing, Drawing, or Journaling - Assorted Point Sizes - 73 Pack with Container
Amazon.com : SAKURA Pigma Micron PN Pen, 0.4–0.5 mm Line Width, Black (XSDK-PN-49) : Office Products