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 3 1/4 in, Ribbon Series R6100, Ribbon Formulation Wax/Resin, Core Diameter 1 in, Product Type Single Color Thermal Transfer Ribbon, Resistance Properties Scratch-Resistant, Smear-Resistant, Standards RoHS Compliance