1 Roll; 620 Labels per Roll, Zebra/Eltron-Compatible 4 x 2.5 Labels (4" x 2-1/2") -- BPA Free! Direct Thermal Labels 4x2.5 Buy this genuine HouseLabels' product with confidence -- a 100% guarantee of satisfaction is provided. This product is genuine ONLY if the HouseLabels' logo is on the black polybag used to protect each roll from sunlight and scuffing. Each white label is blank and ready for your printing. 620 Labels per Roll | 4" x 2-1/2" | Square | White | Direct Thermal | Permanent-Adhesive | 1 Core | Outside diameter = 3.5  4 | Perforation between labels | BPA Free  HouseLabels high quality, direct thermal labels are commonly used with, but not limited to, Datamax[R], Intermec[R], SATO[R], Fargo[R] and ZebraEltron[R] thermal desktop printers  These labels are compatible with any direct thermal label printer with a transmissive label sensor. Commonly used for shipping and Endicia applications, uses can also include printing badges, address labels, barcodes, file folder labels, and other general purpose labels/tags. Excellent for applications requiring multiple contact scans without image smearing.  NOTE: These direct thermal labels are for use in desktop printers that do NOT use a thermal ribbon. Labels sold by HouseLabels for use in Zebra/Eltron, Datamax, Intermac, SATO and Fargo printers are tested to ensure that they are within mfg.'s material specs. Please check the specs of your printer before purchasing labels  ZEBRA Printers with [Max, Min] width (in inches): S4M [4.5, 0.75], LP/TLP 2824 [2.36,1], LP/TLP 2824-Z [2.36, 1], LP/TLP 2844 [4.25, 1], LP/TLP 2844-Z [4.25, 1], TLP 3842 [4.25, 1], TLP 3844-Z [4.25, 1], H2824-Z [2.36, 0.75], R110PAX3 [4.50, 0.625], R2844-Z [4.25, 1] Labels are smooth and bright white for professional results  Labels are smudge-proof as well as water and oil resistant  All temperature, strong permanent adhesive is excellent for cold temperature applications as well as general purpose labeling  Each roll is individually packed into a protective black polybag to protect it from dirt, sunlight and scuffing.