【Thermal Label Size】 - Fan-fold 4" x 6" direct thermal shipping labels, 1000 labels per stack, total 4000 labels. 【High Guarantee】- High quality permanent adhesive guarantees your shipping labels stick. No need to worry about the thermal labels paper fall off. 【Perforated Labels】- Our thermal blank labels are with perforation lines between each label that make it easy to tear off. Saving your time , it's a smart choice . 【Widely Uses】 - Our thermal printer labels are great for shipping labels, address labels, nutrition labels, FBA labels, mailing labels and all your needs. Shipping label paper is widely used for USPS, UPS, FedEx, DHL, Amazon, eBay shipping etc.. 【Wide Compatibility】- Compatible with Munbyn, Rollo, Zebra TLP 2844, GK420T, GX420D, GX420T, GX430T, ZD410, ZP450, ZP505, Rollo, iDPRT, Jiose, Polono and Other 4x6 thermal label printer machine. (Not compatible with Dymo or brother). SJPACK 8 Stack 4 x 6 Fanfold Labels, Thermal Shipping Labels for UPS ,FedEx Shipping Label (4 Stack- 4000 Labels)