the ink comes out completely transparent

Check out all markers and inks from On The Run here

Featured photographers are: Phil America

If you want some extra flow you can remove the tip and use a needle to make some extra holes in it

meaning the grey tone will not shift

flux squeezable marker fx squeeze 180e Exot the ink comes out completelyFLUX squeeze markers in pocket format. The markers are suitable for most types of inks and paint but since the tip lets in relatively much paint, we recommend a thicker paint. The soft plastic exterior allows you to control the flow and whether you wish to make a runnier og sharper line. The marker holds 90 ml ink color and has a 18 mm round tip.