POSCA Paint Marker, PC-1M Extra Fine, Slate Grey. Non-toxic, water-based POSCA paint markers can be used on almost any surface, and are loved by professionals, creative hobbyists and amateurs alike. The alcohol and solvent-free opaque paint covers well, is blendable, dries quickly and can be overlaid when dry. ACMI certified and made in Japan. The PC-1M extra-fine, tapered bullet tip marker is ideal for fine detailed work.