The Brady R6400 Series Resin Formulation offers superior chemical and abrasion resistance when printed on the appropriate label material from Brady. Recommended for use with materials designed to resist chemicals, such as B-492 Frozen Surface Polyester and B-481 Chemical Resistant Polyester. 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!