Precision ink pens designed for accurate, longlasting line work and comfortable extended use. Key benefits — why you need these pens Consistent, repeatable lines: Five tip sizes (0.1–0.8 mm) let you control fine details and broader outlines without changing tools. Ideal when uniform line weight and predictability matter. Durable, archivalquality results: A micronstandard, oilbased ink system delivers quickdry, waterproof, faderesistant, nonpermeable ink that preserves artwork for years and resists smudging and bleedthrough. Ready for mixedmedia and varied surfaces: Works reliably on tracing paper, sketch paper, watercolor sheets, and journals so you can take the same pens from concept sketches to finished pieces. Comfortable, reliable use: Ergonomic grip and consistent ink flow reduce hand fatigue and support accurate strokes at varied angles for longer drawing sessions. Features and specifications Line widths: 0.1 mm, 0.2 mm, 0.3 mm, 0.5 mm, 0.8 mm (micronstandard sizing) Ink type: Oilbased, quickdry, waterproof, faderesistant, nonpermeable Compatible surfaces: Tracing paper, sketch paper, watercolor sheets, journals Performance: Pointed, fluid strokes; steady ink flow; accurate at varied angles; ergonomic grip minimizes fatigue Practical applications (specific use scenarios) Architectural and technical drawing: Produce crisp dimension lines, fine hatching, and consistent scale details with 0.1–0.8 mm tips and a micronstandard ink system that won't feather on drafting papers. Comic and illustration inking: Use finer tips for facial details and textures, broader tips for borders and inks that won't smear when coloring with watercolors or markers. Journaling and mixedmedia sketching: Draw on watercolor sheets or journals without worrying about bleedthrough; quickdry, waterproof ink keeps pages clean and readable. What sets these pens apart Micronstandard precision across a useful range of tip sizes + oilbased, nonpermeable ink for archivalquality work. Designed for multisurface compatibility and extended use with an ergonomic grip and steady flow to support detailed, fatigue drawing. Use these pens when you need dependable line control, archival ink performance, and a comfortable tool that adapts from rough sketch to finished artwork.