The 1880 Drawliner Pen is easy and clean to use for uncomplicated, spontaneous creativity. This precise drawing tool features waterproof ink that produces accurate and high quality results, whether you are working on sketches and technical drawings or inking intricate patterns with Zendoodle or Mandalas.Details:Includes assorted sizes (0.1mm, 0.3mm, 0.5mm, 0.7mm)4 pensVery fine nibQuick drying lightfast pigment inkWaterproofSmudge-proofIdeal for working with stencils