●4" x 6" fanfold Labels: There are 500 labels per stack. Each stack requires less storage space than a roll of labels, providing you with more desk space. ●Versatile compatibility: Compatible with POLONO PL60, PL420, ROLLO, MUNBYN, IDPRT SP410, Zebra, Fargo, Elton, Datamax, Sato, Intermec, NEX and many other direct thermal printers. ●Easy to tear off: There is a perforated thread between each sheet of paper, making it easier to tear off. ●Premium adhesive: The premium adhesive on each label makes it ideal for mailing, postage, address labels and more. ●More eco-friendly: Using fanfold labels instead of roll labels can reduce the time it takes to load new labels into the printer. Feel good about saying goodbye to the wasteful tube.