- Special pen for many special applications such as coated surfaces, nano coatings, optical glass, laboratory glass\n- Adheres to many special surfaces which other fine markers do not adhere to\n- The black Lumocolor permanent special F and M can also be used for marking laundry with and for a variety of outdoor applications, e.g. as a "garden marker"\n- Airplane-safe: Automatic pressure equalization prevents the pen from leaking on board aircraft\n- Excellent smudge-proof and waterproof qualities on almost all surfaces\n- Dries in seconds, therefore ideal for left-handed users\n- Colour-intensive, low odour\n- Extremely lightfast (on smooth surfaces: black for 7 years, red for 1 year; on paper: much longer)\n- Black is weatherproof\n- With clip\n- PP barrel and cap guarantee long service life\n- Red and black ink colours\n- 3 line widths: 0.4 mm, 0.6 mm and 1.0 mm