The UNI PIN PIGMENT 0.30MM BLACK 034 fineliner is a precision marker with a calibrated fine tip for technical drawing, sketching, and writing. Its Super Ink pigmented ink is waterproof and lightfast, allowing you to apply watercolors or markers over the line without risk of smudging. With an optimized 0.3 mm tip, it delivers a perfect balance between line sharpness and ease of gliding on paper. The uniform black tone provides a professional presentation to graphic projects. Recommended for engineers, illustrators, and technical writing tasks.