DISCONTINUED: We are not taking orders for this item. This is an original, OEM Brother M521 black on blue tape cartridge for your P-Touch label printer. The Brother M521 tape cartridges and supplies deliver consistent printing results. This M521 tape cartridge is 9m (0.35") x 8m (26.2 ft) and non-laminated. Print excellent, crisp pages ideal for both home and office use with the Brother M521 tape cartridge.