Ohto Graphic Liner Needle Point Drawing Pen - Pigment Ink - 0.05 mm - Black Ink

Excellent. I've used these before and am glad JP has them now. Could be the best liners out there. Remind me of Rapidograph without the need to refill and fuss with fragile tips that Rapidograph from Rotring or Koh i Noor has OR with faber tips that wear out after a while and produce different line thickness.

Regarding tip sizes, as with all manufacturers the tip size (eg 005 = 0.3mm not 005 mm) is not universal but company assigned.
So, as per some Japanese web sites, Ohto Graphic liners are as follows:

005 = 0.3 mm
01 = 0.4 mm
02 = 0.5 mm
03 = 0.7 mm
05 = 1 mm
1 = ? (could not find this one)

Love the ink and the feel of this pen, though I find the 0.05mm to be a little scratchy to my liking. I press pretty hard with my pen as I write, so if you share a similar writing style, consider a slightly larger width. I do like the sturdiness of the pen and the point—I have never felt like it could break if I pressed too hard. Not the most comfortable grip of any pen I've used, but I don't find it bothersome. Overall a great needle point pen!

Finally, a durable liner pen with waterproof ink even. One thing though, the pen I took on a recent plane trip has started to blob/leak out the vent hole above the point (hence minus one star). Other than that though this pen is great for sketching and fine line work.

Bought a 03 Graphic Liner based on positive reviews and I'm happy with the fast ink flow. The line weight is consistent.
I'll purchase more of these.

Skips too much. The tip is scratchy- sad considering I thought the metal nib would flow smoothly over paper unlike plastic and fibre fine liner tips which are nearly always scratchy. And the ink skips, a LOT. I can't rely on it for a consistent line at all. The only use I can find for it us very rough sketching.