The fineliner/brushpens have two different nibs. A flexible brush tip for thick & thinner lines and a 0.4 mm durable plastic nib for consistent lines and precise details. The triangular shaped barrel and cap (anti-roll) prevents them from falling down from your desk easily. Water-based ink, so odourless, doesn’t bleed trough your paper and dries fast. The sets are easy to take with you to school, cafes etc. With a set of 72 different colours in the assortment there is a very wide colour spectrum available.