Brady distributors have them. I have used them since I worked out a template with Volkswriter on my laptop with the 10 mB hard drive, running DOS 3.3 at 4.77 mHz!
But when you get them from distributors, they can run around a nickel apiece. I use one in the series that starts DAT-34, if I remember right. It has been a couple of years since I needed so many labels that it has been worthwhile to print them.
A good answer is easier with a clear question giving the make and model of everything. "The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw