The TZe-FX621 9mm label maker tape is primarily designed for identifying cables and fibers. It has been rigorously tested by Brother to ensure you can print ID labels quickly and efficiently. Developed with a special adhesive that allows labels to be easily applied to wires, PVC pipes, or any other cylindrical surface. The TZe-FX621 tape with black print on a yellow background is also suitable for use on narrow curved surfaces such as pipes and conduits. The label can be repeatedly wrapped around the cable or stuck on it in a flag-style. Compatible with a wide range of P-touch printers, the replaceable laminated labels have been developed to last and are capable of withstanding extreme temperatures, sunlight, water, chemicals, and abrasion.