The Schneider 56 Mini black M ballpoint pen refill (2 units) offers intense black ink in a compact size for mini ballpoint pens. Presented in a set of 2 medium (M) tip refills with indelible, quick-drying black ink, it guarantees a defined and clean line on paper. The high-precision metal tube construction prevents ink leaks inside the pen. Excellent for use in pocket notebooks, diaries, and compact travel pens.