Needing to write on black gaff tape? The solution is a Sharpie brilliant white paint marker. Sharpie brand is number one in markers used on film sets for good reason. They have been around longer that any other brand and they make their products to last.
Sharpie oil based permanent white markers are capable of writing on virtually any surface including gaff tape, rubber, wood, glass, plastic, stone and more. An internal, release valve in the marker channels controlled amounts of oil based paint for smooth writing action and to extend marker life. The valve works automatically with each stroke of the marker!
Non toxic paint formula is safe for humans and the environment.