The Brady R6700 Series Wax/Resin Formulation is a white ribbon that offers good chemical resistance when printed on the appropriate label material from Brady. Recommended for printing on dark-colored heat shrinkable tubing materials, such as black B-342 and B-344 PermaSleeve wire markers from Brady. 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!
Detailed Specs
Brady R6700 Wax-Resin Ribbon Data Sheet.pdf
https://www.thermalprintersupplies.com/content/product_downloads/brady/Brady R6700 Wax-Resin Ribbon Data Sheet.pdf