1 Roll GREEN 2x2 Thermal Transfer 1000 labels per roll 3" core for printing Barcode Barcodes Shipping Labels used with Datamax and other desktop printers that use Ribbons Label Info: Self-stick adhesive, perforated between each label Core Size: 3" Outer Diameter: 8" Ribbons Required Compatible with Zebra Eltron , Datamax , Intermec , SATO , Fargo , and other thermal printers