Brother have seen fit to cover almost every eventuality with their P-Touch range of label tapes and the TZ-FX641 certainly fulfils a very specific role. The Brother tape within this TZFX641 label cartridge is 18mm thick and the tape yellow in colour.Your compatible Brother label printer will produce black characters on the Brother TZEFX641 label tape, making them very easy to read. Despite its size, the genuine Brother TZE-FX641 label cassette contains an impressive 8m of tape.