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 Black Ribbon Format Ribbon on Open Core Ribbon Length 984 ft Ribbon Width 5 1/8 in Ribbon Series R4900 Ribbon Formulation Resin Core Diameter 1 in Product Type Single Color Thermal Transfer Ribbon Resistance Properties High Temperature-Resistant Smear-Resistant Solvent-Resistant