Klein Tools' Tone & Probe PRO Electrical Wire Tracing Set includes a responsive tracing probe with a durable replaceable conductive tip, integrated work light, and a 3.5 mm headphone jack for improved performance in noisy jobsite environments. A convenient terminal block helps verify the traced wire pair, while the included padded zipper pouch keeps the complete kit organized and protected. Engineered for dependable performance in residential, commercial, and structured cabling applications, this tracing set provides an efficient solution for locating wiring, verifying connections, and reducing troubleshooting time.