Many pens tend to work on one side only and when you twist the pen it makes shabby lines

This is also a good pen for calligraphy and drawing; you can use the tip of the pen for a fine, precise line or you can use the pen at an angle for a thicker line

Writes very well with a nice solid line

thin lines, thick lines, and everything in between all in one pen! love it!

Perfect sturdy tip for lettering fine lines

It’s a fine pen, it will make fine lines and thick lines

So far, this has produced nice crisp thin lines when used with a light touch

Very nice and goes thin to thick lines great for writing and cartooning

and I was having extreme difficulty switched BG from that fine line to the thick line with them, but this to me is more flexible giving you greater control.

You get a very good line with them and the colors are beautiful.

It has a rich black color, it doesn't streak or cause uneven lines.

Rich ink, crisp lines, and pen responds well to pressure