Brand: Klein Tools Manufacturer's Part Number: VDV500-123 Part Type: Electrical Test Leads and Probes Product Line: Klein Tools Probe-Pro Tracing Probes Summit Racing Part Number: KLE-VDV500-123 UPC: 092644692345 Test Lead Type: Probe Test Clip Leads Included: No UL Compliant: No CSA Compliant: No Quantity: Sold individually. Klein Tools Probe-Pro Tracing Probes Klein Tools Probe-Pro tracing probes trace non-active wiring when used with Toner-Pro Tone Generator (VDV500-063， sold separately). They feature a responsive， durable， replaceable non-metallic， conductive tip and a work light for use in dark spaces. A 3.5mm headphone jack allows for headphone (not included) use in extreme noise environments. The terminal block confirms the toned pair has been located.Additional details: * Tool-less， twist-and-lock replacement tip (VDV999-068) available* One-push power button with power-on LED indicator; no need to hold button down* Auto power-off* Low battery indicator* 4 x AAA batteries included* Includes a loop for a lanyard* Works with Klein's Scout Pro， Lan Scout， Jr. and Commander series of testers