Have the handy tools required to properly complete repair and manufacturing tasks with this TEP-200 Tone Tracing Probe from the experts at Jonard Tools. Since 1946 Jonard has been producing high-quality tools used by professionals across the country. This ruggedly constructed Tone Tracing Probe is all that you ll need to detect tone and check polarity of many 6P2C/4P2C telephone jacks. It has a plastic probe tip to prevent accidental shorts and includes a signal strength LED for visual indication of tone detection. Jonard has provided a top-of-the-line tool that offers greater durability and more efficient use than competitors for reliable use out in the field. Be sure to check out the Jonard website to check out their full line of tools. Pick up this handy tool today for all your professional needs!