I ordered 3 different thicknesses of nib - this review covers them all. It's sold as a drawing pen, but I've been using them mainly for figure work and writing. It gives a smooth writing experience, and feels quite like a fountain pen in terms of ink flow. If it lasts as long as a gel pen before running out (too early to tell yet) I may well make this my go-to pen. Range of nib sizes allows artists plenty of choice, but it's also helpful for the mere pen-pusher like me.

Very useful as it writes on a wide range of surfaces, including Tyvek, without bleeding. Great for museum labels.

I've used this pen for a few years now. They last brilliantly and have a smooth line, best of all it's totally waterproof so ideal to use with watercolours and inks.

One of my favourite brands. This pen has a fine but sturdy tip that delivers a consistent line. Pale grey is beautifully subtle.

I think these are better than microns, they’re cheaper, nice and even and the size is easier to read on the cap. The 0.03 is wonderfully fine. I think maybe they don’t last quite as long but there are too many variables I may be wrong.Definitely try these.

I’m a fan of this product the pin pens allow me to ink in fine details or even begin a piece of sketch in a light manner that for me is subtle so works as a perfect underlay for further details or works.

Review of Unipin Single Fineliner Pens

The ultimate in fine definition drawing pens. Wouldn't use anything else.