Compatible Dymo LetraTag 91201 (S0721610) Black on White LetraTag Label Plastic Tape 12mm x 4m

It’s the standard LetraTag plastic label cassette: 12 mm (½") wide × 4 m long, black text on white plastic — the common S0721610/91201 part for LetraTag machines. Think of it as the everyday white plastic tape most LetraTag owners keep a spare of.

The 91201 fits the LetraTag family—e.g., LT-100H, LT-100T, LT-110T, LetraTag Plus and other LT handheld models. If your machine takes “LetraTag (LT) 12 mm” cassettes, this is the tape for it.

Super simple: open the cassette cover, drop the cassette in so the tape sits between the print head and pinch roller, press it until it clicks, then close the cover and power on. If the tape doesn’t feed, remove and reset it (and check you closed the cover fully). The official user guide shows the same quick steps and diagrams.

Most fixes are quick: (a) make sure the cassette is correctly seated in the guides; (b) clean the print head with isopropyl on a cotton swab (power off first); (c) low batteries cause weak prints — try fresh AAs; (d) if the cassette itself is damaged or counterfeit, swapping to a known-good cassette can confirm that. Dymo’s troubleshooting docs cover these same steps.

Yes — many sellers make compatible 91201 replacement tapes (cheaper multi-packs are common). They usually work fine, but quality varies: some compatibles have weaker adhesive or slightly different print contrast. If you rely on archival labels or heavy wear/water resistance, stick with genuine DYMO or a well-reviewed compatible

The classic 91201 is white plastic with black print, but LetraTag cassettes are available in many materials (plastic, fabric, iron-on) and lots of colours — pearl/metallics, clear, bright colours — so you can pick wipeable or decorative options depending on the job.