Bicolour pencils.
Red / Blue features vermilion red lead on one end and Prussian blue on the other.
Fluro / Graphite features highlighter yellow on one end and graphite on the other.
Bicolour pencils.
Red / Blue features vermilion red lead on one end and Prussian blue on the other.
Fluro / Graphite features highlighter yellow on one end and graphite on the other.