Superior Graphic Supplies 4 x 3 inches Direct Thermal Shipping Labels Permanent Adhesive 500 Labels Per Roll, 1 inch core Compatible with Zebra PrintersThe white labels come pre-rolled, so they just have to be put into your label printer. Maximizing efficiency and making it easy for you to print one label or a hundred of them at once. And their permanent adhesive helps the labels stick and stay put. Our mailing labels will print UPS labels, FedEx shipping labels, USPS labels and other major carrier’s printing margins. Our white thermal direct labels are also great as carton labels, deli and bakery labels, personalized address labels, these durable custom labels have so many uses. Perfect For Your Rollo, Zebra, Datamax, Sato, or Intermec Desktop Printer! Do not tape over labels, the labels are sticky enough on their own. These labels are not recommended for peel and present mode. These Labels are not compatible with Dymo PrintersFeatures:Width - 4 inchesLength - 3 inchesCore - 1 inchPerforated - YesLabels Per Roll - 500Adhesive - PermanentTechnology - Direct Thermal