Ohto Graphic Liner Needle Point Drawing Pen - Pigment Ink - Pack of 5

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)

I have been using them for a few days now on a variety of papers (Moleskine and regular paper). So far I love them. I've used a wide variety of technical pens in the past from Rapidograph and Staedtler to Copic, Sakura and Faber Castell. All of the traditional tech pens tend to clog up. The fiber tip markers like the Copic and Sakura tend to push back up into the metal ferrule. Probably because I push too hard but that's the way I draw. I also travel a lot so the pens have to stand up to changing air pressure without leaking. I also ink on top of pencil sketches so I need a pen that won't clog or skip. So far the Ohto line work great. The line is very smooth and even and black. It dries fast and holds up under erasure better than the others even when I have inked over pencil. They don't leak on flights so far. And of course there is no fiber tip to mush down or retract within the metal ferrule. I highly recommend them for sketching.

These are wonderful pens. I tried them on some cheap notebook paper and didn't experience any feathering or skipping with any size pen point. They are also surprisingly smooth and more pleasant to write with than some pilot roller ball pens I've used in the past. They are wonderful for sketching, technical drawings, and even taking notes in some of my classes.

I first want to start off this review by saying that I have only had these for about a few days, but so far, I love them. These pens are compatible with the Copic Multiliners and Sakura Microns. The great thing about these is whenever you cap them or hit the writing tip, it'll stay just fine! Unlike other felt tip pens (Staedler, Microns, Copics) you don't ever have to worry about accidentally crushing your pen. They produce the same line + color of the other pens. If there is any complaint about these, it's the fact that these tend to bleed A LOT. If you are drawing in little details, you have to be careful because these will bleed. Definitely a great buy!

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!