M710 Series snap-in 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. R6600 Series Resin Formulation offers excellent solvent and friction resistance when printed on the appropriate label material from Brady®. Recommended for printing on heat shrinkable tubing materials from Brady®, including material numbers B-342, B-7641, B-7642, B-7646 and B-7647. Self-contained M7 Printer ribbon cartridges insert straight into the printer with ease. Brady Authentic materials work seamlessly with Brady printers for improved printer and material communication, seamless mobile app interaction, and better performance and reliability.