On The Run OTR.970 Hard To Buff Ink Refill 210 ml
Just like the name claims, this ink is near impossible to remove once it’s completely dry. Alcohol based, black and permanent ink that works well with most surfaces and markers. Fill up your old markers, or buy empty markers here. Comes in a 210 ml bottle, with a screw lid. Comes in smaller bottles as well: On The Run OTR.970 Hard To Buff Ink 120 ml.