. You can easily organise files and folders with the use of the original 9mm black on blue Brother TZe-521 laminated tape. The Brother TZe-521 P-Touch tape can easily fit into your Brother labelling machine. You can expect sharp black text on blue tape with the Brother TZe521 label. The good thing with using the Brother TZe521 label cassette is it\'s very versatile. The Brother TZe-521 black on blue 9mm labelling tape can deliver long-lasting labels that can withstand extreme temperatures and even water or chemical spills..