I got the set of 8 PNs that I found on Amazon. I believe they have the same ink as the microns. According to the package, they have a "Durable, flexible nib for fine to medium line widths. Archival ink is water proof, chemical and fade resistant, bleed free, quick drying and ph neutral." The package says .45 mm. I found the list of colors when I went to the web site....black, red, blue/black (I love this one), blue, rose, burgundy (I thought it was brown, but nope, burgundy! Very nice!), purple and sepia (which is actually a very dark brown). The web-site also clarifies that you can obtain fine or medium line width depending on your personal writing pressure (0.4mm - 0.5mm). This equates roughly to the 05 Pigma micron which is listed as being 0.45mm.
As you can tell from my 3Z of Crescent moon, you can get a very fine line with a light touch. Each side of the triangle is approximately 3.5 inches long.
I used the rose, and both blue and blue/black. In comparison, I also used a graphite (that's the color) Graphik 0.1 line maker by Derwent. It is a lightfast pigment ink and I love that the color mimics pencil but you don't worry about smudging. To compare line widths, check out the gray in the center of each corner (I used the PN in blue/black and Graphik in graphite in all three corners. Instead of graphite pencil shading, I opted for Polychromos colored pencils.
And in case you missed my post about those magnolias, they were created with watercolor pencils and a stamp set from Altenew. You can find my post here.