B30 Series "Drop & Click" print ribbons enable 5-second ribbon supply changes. No calibrating, no threading, no waste, no hassles and the ink always faces the right direction! For use with printers: BBP®30 Label Printer, BBP®31 Sign and Label Printer, BBP®33 Label Printer, BBP®35 Multi-Color Sign and Label Printer, BBP®37 Color & Cut Sign and Label Printer, BradyPrinter i3300, BradyPrinter S3000 and BradyPrinter S3100.