Brush pens supply a lot more variation in line width than the usual fineliner pen. Their nibs have a broad base that then tapers into a fine issue. Typically the nib is made of a conical bit of felt, but you can find pens which have a true brush https://ink-pen-drawing-technique88765.blog-mall.com/37561004/not-known-details-about-ink-pen-drawing-techniques