Label Printer Ribbon Compatible Grainger Part Number 22NA72 Compatible Mfr Part Number BBP72-34L BBP81 Printer Series Compatibility BBP72 BBP81 i7100 THT 3 in Core Printers Ribbon Color Silver Ribbon Format Ribbon on Open Core Ribbon Length 984 ft Ribbon Width 3 1/4 in Ribbon Series R4500 Ribbon Formulation Wax/Resin Core Diameter 1 in Product Type Single Color Thermal Transfer Ribbon Resistance Properties Chemical-Resistant Smear-Resistant Standards RoHS Compliance