Direct Thermal Paper Label 4″ x 6″, with Perforation, White, BPA Free, Permanent-Adhesive.2000 labels per stack, 2 stacks per box. Easy to peel and stick. Ribbons are NOT required.Compatible with Zebra 2844 ZP-450 ZP-500 ZP-505, GoDex, MUNBYN, Rollo, iDRPT, Polono, Jiese, K Comer, LabelRange, OFFNOVA, JADENS, Photomo, NefLaca, Zebra, MFLABEL, Arkscan, BESTEASY, and other direct thermal printers. (NOT Compatible With DYMO and Brother)Ideal applications including shipping label, address label, UPC codes, barcode labels, postage, mailing & shipping labels and other identification purposes. Suitable for use with UPS, Fedex, USPS, eBay, Paypal and other vendors