The Staedtler pen features water-based pigmented ink that dries quickly and is fraud-proof and permanent. It offers an optimal ink flow system and a refillable design. The tip diameter is indicated on the cap. It is suitable for use on lettering guides. The pen features an aluminum finish and a rubberized grip zone with an anti-roll system, a safety cap with a screw-on system, and a chrome-plated metal clip. The fine-tip marker is ideal for writing, sketching, and drawing. It can be left uncapped for up to 18 hours without drying out (ISO 554 test). Safe for airplane use: automatic pressure equalization prevents ink leakage. Equipped with an extended metal tip, this marker is ideal for use with rulers and templates. Permanent pigmented ink. Water- and light-resistant. Erasable when used on tracing paper, smudge-free highlighting. Chrome-plated metal clip. Polypropylene body ensuring long service life. Available in 5 tip widths, black ink. Line width: 0.5 mm.