Brush pens offer you additional variation in line width than the usual fineliner pen. Their nibs have a wide base that then tapers into a good level. Commonly the nib is made of a conical bit of felt, but you can find pens that have a true brush tip https://caidenqbfjm.ja-blog.com/35274456/a-simple-key-for-ink-pen-drawing-techniques-unveiled