up to about 4

There are two ways to use it: rub the clear tip against a colored Koi pen's tip for a second or two to pick up some pigment

They are also great for marking text in course literature and other books

The paint will fully cover the surface used and is permanent when dried

like most other shoe polish markers

on the run otr 004 soultip empty squeeze marker 12 mm Rois up to about 4One of our favourites! Empty OTR. 004 squeeze marker from On The Run, that is made from flexible plastic, so you can get a nice flow in your lines. The transparency of it makes it easy to see both which colour and how much is left in the pen. Equipped with a durable 10 mm tip, that can be changed when needed. Check out all markers and inks from On The Run here.