These Faber-Castell Connector Pens are great for creating art pieces. This pack contains neon colours so that aspiring artists of all ages can add vibrancy to their canvas. Plus, once you're done using them, you can snap them together and put them away. These pens have a medium sized, bullet shaped nib. They're ideal for adding colour to your art pieces, as well as colour coding notes and information at school, university or work. These pens are designed for use on paper surfaces.