Ideal for general label maker applications in the office, workplace, or home, this 9mm black on clear tape cassette is perfect for identifying the contents of envelopes, file folders, and cabinets. With the mirror function on the compatible P-touch printer, you can print signs for glass doors, allowing the label to be affixed inside the glass with the text facing outward. Brother P-touch labels are made to last, even in extreme conditions, and withstand extreme temperatures, sunlight, water, chemicals, and abrasion.