so you can get a nice flow in your lines

Tip: fixed 4 mm metal guide sleeve

5 mm hairline on the edge — suited to fine italic lettering

They are filled with water-based ink that dries quickly

A handy pump-valve marker pre-filled with the popular black FX

on the run otr 070 hard to buff ink marker 15mm Caster so you can get aClassic flow pen filled with On The Runs notorious Hard to Buff ink. Permanent alkohol based black ink that adheres really well to nearly all surfaces. Just like all other pens from On The Run, this one is refillable and the tip is easily changeable as well. Check out all pens, inks and other products from On The Run here.