Smudge-Free and Resists Scratches, Water, Dirt, Dust, and Grease, Labels backed with strong self-adhesive, will not detach during shipping ✔ Size: 4" x 6", 500 Fanfold Direct Thermal Shipping Labels, You will receive 1 stack box that contains 500 labels. ✔ Color: Bright White. ✔ Premium Quality Paper provides Dark Printing images. ✔ Blank Direct Thermal labels are Waterproof, Oil and Scratch Proof, and are Self Adhesive. ✔ Labels can be used for inventory, barcodes, mailing, or shipping labels. ✔ Perforation between labels for easy to peel, Just peel and stick without having to use packing tape. ✔ 500 labels per stack (Saving you significantly more space than the typical 2000 label counterparts!) ✔ Compatible with Rollo, Zebra, Fargo, Elton, Datamax, Sato, Intermec, NEX, and many other direct thermal printers ✔ Not for DYMO Printer