This genuine Brother TZE-S631 label cassette contains 8m of black on yellow tape and can be applied to a variety of different surfaces. Results from the TZES631 are guaranteed by Brother to be the finest available and even feel incredibly satisfying. 12mm in width, the genuine Brother TZS631 label tape is the ideal solution for any compatible printer. This TZ-S631 features a top-quality strong adhesive construction and can be used in conjunction with the Brother PT-D400, or any other label maker found on this page.