The system with direct ink supply allows for much longer writing than conventional filter systems. It writes evenly and clearly until the last drop of ink. The alcohol-based ink writes on most surfaces: glass, plastic, metal, wood, etc. The ink level is visible through a transparent window in the casing. The hexagonal cap with a tip marking does not roll off the desk. It features a ventilated cap with a clip. Fine tip for precise marking. Line width: 1 mm. Writing length: 400 m.