The portable printer die-cut heat shrink labels in yellow are made of military-grade polyolefin. They measure 0.19" (4.6mm) diameter, 1" (25.4mm) length, and 0.34" (8.6mm) width and have a wire range of 18-12 AWG. The fast-loading P1™ label cassette includes both label material and ribbon for easy label changing. There are 100 labels per cassette.