Opaque white ink

In my workshop and studio, I label boxes, shelves, drawers, cases, bins, and parts with a very dense white “ink” which is really white correction fluid in a stubby pen. White is usually much more legible than black, but white ink is much more difficult to apply heavy enough to cover any surface. These Pentel Presto Jumbo Correction Pens do a fantastic job applying thick non-drippy white paint via a fine point tip, and are small enough to carry in my workshop apron. They draw perfectly opaque white on any surface, instantly, even vertical surfaces. I have not found anything else that will do that. — KK