Posca White marker - fine bullet tip pen. The bullet shaped tip is between .9 and 1.3mm in size.
Marker can be stored in any position as long as the cap is on firmly. This link
contains a host of information regarding Posca pens.
Pen contains a not-toxic, water-based, white pigment ink. It will write on a variety of surfaces
- glass, plaster, plastic, metal, wood, canvas and more.
(inset photo: White dots on the paper fern die cut were created with this pen.)
Dried marker can be scraped off nonporous surfaces. Alcohol and solvent free. From Mitsubishi Pencil Company - made in Japan.