Fluorescent Yellow + Graphite Pencil

Caran d’Ache Graphicolor Bicolor Pencils feature a split core that is either graphite on one end and colored pencil on the other, or colored pencil on both ends. These two-tone pencils have 0.3 mm cores.

The superior-quality HB graphite lead is ideal for making annotations, and the  fluorescent yellow colored pencil can be used for making permanent underlines.