Black Fineliner Micron Pen - 03These pens are waterproof, permanent and of archival quality and suitable for acid free applications. They are an ideal pen to use to put highlights onto your mixed media projects and are perfect for zentangling. If you are unsure which pen to start with for zentangling then this is a good choice as it is in the middle of the nib sizes we stock. They are a Sakura pen that are 25 years in the making. 03 nib is 0.35mm in size. One pen supplied.