Features ]: 1" x 2" (25mm x 51mm) (750 Labels/Roll, 6 Rolls), Paper tube diameter: 1" (25.4mm). No Ink Toner or Ribbon Required! Save your money and effort. .[ Good Compatibility ]: Suitable for Zebra, Eltron, Intermec, Datamax, Fargo, Sato, NEX and most thermal label printers that can be set to 1 inch in print width. . Important Tips : Not compatible with Rollo and Munbyn printers that keep labels outside the printer and require a minimum width of 1.57 inches. .[ Perforated ]: We go beyond standard labels sold online. Our labels are perforated to provide easier separation between labels. Fold the printed labels with perforations to keep them organized. No more labels messy! .[Adhesive]: Still reliable in extreme temperatures (14℉~158℉). Patented Adhesive provides long-term strong adhesion. No more shipping losses due to peeling labels. Enjoy extra margin for your business. .[Fade & Smudge Resistant]: Prints crystal clear images and easy-to-read barcodes. Prevent fading and smearing. Let your carriers easily scan barcodes all the way to delivery. We all hate ' to sender' due to unreadable barcodes. .[Technical Support]: We stand behind our brand. BETCKEY lifetime customer support via Amazon message, email, phone call and remote desktop operation. Contact us immediately if you need any help.