Sailor Fude Keitai Double-Sided Brush Pen
This is a disposable double ended felt tip brush pen made by SAILOR.
The tip is made of nylon but beautifully soft and with a precise point - medium width for both ends.
In one end the pigment ink is very black and the other end is a lovely light grey - both colours water-resistant (ink doesn't move when exposed to water). A great brush pen for urban sketching.
Body is brown plastic.