Create smooth thick and thin transitions for lettering and drawing using these Staedtler pigment brush pens. Pens feature permanent water-based archival ink with high lightfastness and brilliant colors. Medium-firm fiber brush tip makes it easier to control the pens. Marker Ink Type: Permanent; Marker Tip Type: Brush; Marker Tip Size (text): Medium-Firm; Marker Color(s): Assorted Basic.