Brady, B30-R6400, 143118 4.33" x 200' B30 Series R6400 Printer Ribbon, Black B30 Series "Drop and Click" print ribbons allow for ribbon supply changes 5 seconds. No calibration, no threading, no waste, no hassle and the ink always faces the correct direction. Single color ribbon to print a single color on a label The series resin formulation R6400 offers superior chemical and abrasion resistance when printed on the appropriate Brady label material Recommended for use with materials designed to resist chemicals, such as B-492 Frozen Surface Polyester and B-481 Chemical Resistant Self-contained cartridges B30 Series drop directly into the printer with a "click".