When used with BradyPrinter i5100 andBRADY IP Series Label Printer this part must be fed externally into printer, and will also operate in full manual mode and is not enabled with Brady PrintSmart chip technology. PermaSleeve Heat Shrink Wire and Cable Continuous Labels for 3in Core Printers - 1/2in Dia Black 3:1 heat shrinkable sleeve fit snugly around wires for maximum insulation protection and permanent identification. For use with other printers, this part may also be required to be externally fed.