You are purchasing 1 Rolls of Thermal shipping labels. Compatible with FedEx, UPS and USPS shipping systems Each roll has 420 labels on it. Direct Thermal Label are 2844 Zebra and Eltron Compatible with UPS,USPS, Fedex & DHL They measure 6.75" X 4" each label, with a .75" doc tab on the top of each label. The label is 6 X 4 and the doc tab adds .75" to the length. Made for most printers that will accept roll labels that are 4 in. wide. and a core size of 1" or smaller.Material: top coated direct thermal paper Label Size: 6.75"X 4", 420 Labels per roll Core size: 1 InchThermal Bar code Labels Compatible with Zebra and Eltron ZP-450, ZP-500, ZP-2844, 2824, 2742, 2443, 2442, 2543, 2622, 2642, 3642, 3742, GK, GX printers & printers from Intermec, Sato, Datamax, etc. that use 1" cores or smaller Rolls per case: 8 rolls Labels per case: 8 x 420 = 3,360UPC: 740016535935, S-7485 Search_Phrases: UPS shipping label, Fedex shipping label, FedEx Label, UPS label, USPS Label, USPS shipping labels