The portable printer die-cut heat shrink labels in yellow are made of military-grade polyolefin. They measure 0.25" (6.4mm) diameter, 1" (25.4mm) length, and 0.44" (11.2mm) width and have a wire range of 16-10 AWG. The fast-loading P1™ label cassette includes both label material and ribbon for easy label changing. There are 100 labels per cassette.