Fine pen with a metal tip for writing and sketching. The long metal tip is ideal for use with rulers and stencils. It features pigment ink that is archival quality, lightfast, and waterproof. The automatic pressure equalization function prevents the pen from leaking during air travel. It can be made erasable on drawing film and can be painted over without smudging. The PP barrel ensures a long lifespan, and the cap is equipped with a metal clip.