Brush pens offer you a lot more variation in line width than the usual fineliner pen. Their nibs have a wide foundation that then tapers to some high-quality position. Usually the nib is fabricated from a conical bit of felt, but there are pens which have a real brush https://ink-drawing-for-beginners21098.thenerdsblog.com/40932413/top-guidelines-of-ink-pen-drawing-techniques