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!- One-color ribbon for printing a single color onto a label- R4300 Series Ribbons offers strong environmental resistance against smearing and chemicals when printed on the appropriate Brady® label material- Recommended for printing on paper and films that have a matte or rough surface, such as B-427 Self-Laminating Vinyl and B-499 Nylon Cloth from Brady®- Self-contained B30 Series cartridges drop straight into the printer with a "click"