A wonderful fine fiber tip. Unique design means the pen works after setting capped for weeks, and tip goes from 2 mm at the tip to 7 mm. Easy to use - each pen comes with a coded cap and pocket clip cap, light-weight easy to hold and incredibly durable. Fit for exceptional professional technical writing and drawing pens for artists, writers, illustrators, students, and teachers, flowing ink with a smooth glide that allows you to create perfect clean lines with every use.