Description
Compatible MK121 M-K121 MK-121 – BLACK ON CLEAR – 9MM X 8M P-TOUCH Labelling MK Tape
The MK121 is a Brother-compatible black on clear label tape measuring 9mm × 8m. It is a direct, cost-effective alternative to genuine Brother cartridges. Designed for everyday filing, storage, asset tagging and cable identification, it delivers clear, durable labels straight from your Brother P-touch label maker.
The laminated construction protects printed text from water, fading, abrasion and chemicals, so labels stay sharp and legible both indoors and outdoors. Thermal-transfer printing means there is no separate ink or toner to replace, and labels peel cleanly for a tidy, professional finish.
MK121 Specifications
- Tape code: MK121 / MK121 (9mm black on clear laminated tape)
- Tape dimensions: 9mm wide × 8m long
- Colour / print: Black on Clear (thermal transfer — no separate ink or toner needed)
- Adhesive: Strong acrylic adhesive for smooth, flat surfaces
- Durability: Laminated finish resists water, grease, abrasion and UV fade for long-lasting labels indoors and outdoors
- Material: Laminated PET / polyester tape; the clear overcoat protects printed text from smudging and wear
- Print method: Thermal transfer on laminated tape (no ink ribbon required), with a split-back liner for easy peel-and-stick application
- Fade resistance: Laminated ink encapsulation keeps labels sharp and readable, even in bright sunlight
- Type: Compatible (third-party) tape — not Brother-branded
MK121 Compatible Printers
This 9mm MK tape works with 6 mm, 9 mm and 12 mm-class P-touch machines, including PT-D200, PT-D210, PT-D215E, PT-E100, PT-H100, PT-H101C, PT-H105, PT-H110, PT-H111, PT-1000, PT-1010, PT-1090, PT-1230PC, PT-1280, PT-1290, ST-1150 and many legacy P-touch models. It also fits mid-range and desktop models such as PT-D400, PT-D400AD, PT-D400VP, PT-D410, PT-D450, PT-D460BT, PT-E300, PT-E310BVP, PT-H300, PT-H300Li, PT-1300, PT-1700, PT-1750, PT-1800, PT-1830, PT-1880, PT-1900, PT-1950, PT-2030, PT-D600, PT-D610BT, PT-D800W, PT-E500, PT-E550W, PT-E560BT, PT-H500Li, PT-P700, PT-P710BT, PT-P750W, PT-2430PC, PT-2730, PT-9600, PT-9700PC and PT-P900, PT-P900W, PT-P910BT, PT-P950NW, PT-9400, PT-9500PC, PT-9700PC, PT-9800PCN. If your P-touch label maker accepts 9mm MK laminated tape, this MK121 cassette will fit and print without adjustment. If you are unsure, check your device’s tape compatibility list before ordering.
Frequently Asked Questions
What size and length is the MK121 tape?
Each cassette is 9mm wide and holds 8m of laminated tape.
Which printers is this tape compatible with?
It fits Brother P-touch label makers that use 9mm MK laminated cassettes. Check your model’s tape list if you are unsure.
Is this a genuine Brother tape or a compatible one?
This is a compatible (third-party) tape built to the same dimensions and specification as the original. It is not Brother-branded.
Is the tape suitable for outdoor use?
Yes. The laminated finish resists water, fading, abrasion and many chemicals, so labels hold up indoors and outdoors.
Does this tape need ink or toner?
No. Brother P-touch printers use thermal transfer, so the tape prints on its own with no separate ink, ribbon or toner.






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