Brady M21-375-461 0.375" Width, 21' Height Polyester B-461 Labels For BMP 21 Mobile Printer And LABPAL Label Printer Black ribbon on white tape B-461 Self-laminating polyester Measures 0.375" width by 21' height Recommended ribbons: Brady series R4300, Brady series R4500 (colors - red, blue, green), Brady series R6200 (alternate), B-461 can be printed with series R6200 ribbon