All label printers and receipt printers supplied by Tengo Software use the same till rolls, we have found Amazon to be the cheapest and quickest supplier – see below paid links to each:
Dymo label rolls: https://bit.ly/tengoLabels
Receipt rolls: https://bit.ly/TengoReceiptRolls
For the label rolls, if you have the newer 550 series Labelwriter, only the official Dymo labels will work, as on the link above. Please don’t buy compatible ones. Thanks!