Label Printer Ribbon, Compatible Mfr Part Number THT 1 In. Core Printers, Printer Series Compatibility THT 1 In. Core Printers, Ribbon Color Black, Ribbon Format Ribbon on Open Core, Ribbon Length 360 ft, Ribbon Width 4 in, Ribbon Series R4300, Ribbon Formulation Wax/Resin, Core Diameter 1/2 in, Product Type Single Color Thermal Transfer Ribbon, Resistance Properties Chemical-, Smear-, Standards CSA Approved, UL Recognized