For the Epson LW-600P, start with the exact-printer tape selector and keep the full accessory code. Epson’s US specification calls the tape system LC, while the accessories linked to that printer carry LK item references.
The supported tape widths are 6, 9, 12, 18 and 24 mm. Equal width does not make a Brother or DYMO cassette fit.
Match the full accessory code
LK-4WBN is a standard half-inch black-on-white item, while LK-6WBN is the one-inch version. Compare the complete reference and the material description on the product page.
The selector includes standard, clear, strong-adhesive, metallic, ribbon and iron-on choices. A standard label and an iron-on label can share a width but require different application methods.
Choose material before buying several packs
Use standard adhesive tape for an application described on that item page, strong-adhesive tape where that material is required, and a fabric product for its stated fabric use. Decorative ribbon is a separate supply, not ordinary adhesive tape.
Check the background and print colour as a pair. “Black” in a shortened listing may describe the printed text rather than the tape background.
Keep the regional model with the order
The checked US printer page is product C51CD69070. Use that page’s linked accessories when researching this market, and compare local Epson documentation before substituting a different regional pack.
For a re-order, retain the printer model, complete LK item code, width and material together. That record is more useful than a photograph of the cassette colour alone.