Overview This ink-side-out ribbon features an open 1 in. core for compatibility with a wide variety of thermal transfer printers. 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 Combine Brady label materials with their recommended ribbon series for superior legend performance For Use with Printer: BBP72 Label Printer, BBP81 Label Printer, BradyPrinter i7100, BRADYPRINTER PR Plus Series Label Printer, THT 3 Core Printer Ribbon Series: R6600 Color: Black Ribbon Ink Wind Direction: Side Out 4.33 In X 984 Ft (110 Mm X 300 M) Cat: BRAR6607 Item: 0909040 Cat: R6607 Mfr: Brady UPC: 662820898368 Country of Origin: UNITED STATES Color: Black