Features: When testing the component, it can be directly measured from the rear of the-wire harness-plug terminals without damaging the-line, reducing the damage of the-line insulation rubber, thereby reducing the impedance caused by the rust of the-line. Applicable to any meter, extension of the oscilloscope probes, reduce the trouble of wiring when checking the-line, help-fast detection. When measuring current, it is not necessary to cut or-disconnect the-wire, and the-wire with resistance can be-connected to the circuit in series. The variable resistor-can be like the water temperature sensor-plug, the hypothetical signal of the-throttle position sensor component to the computer, saving the risk of replacement. Equipped with two LED lights, can monitor-hall, photoelectric signal, fuel-injector, solenoid-valve, automatic transmission shift solenoid-valve and other actuator-control signals. Various wire resistances in the-box can be applied to-plug terminals of various European, American and Asian car-systems, with high versatility and convenient operation. Turn your test and measurement equipment into a powerful diagnostic tool. Fault finding for more and more sensors, actuators and electronic circuits found on today's-vehicles. Used to track, inspects, capture or repair complex vehicle circuits. Specifications: Material:Copper/PVC Size:Approx.38x30x6cm/14.96x11.81x2.36inch Package Includes: 2pcs 5KΩ Potentiometer(variable-resister) 2pcs LED Stroboscope 2pcs SRSsConnector 2pcs Alligator-Clip 2pcs Probes 2pcs Acicular Probes 2pcs 1 to 2 Connector 4pcs 1 to 1 Connector 24pcs Round Terminals 48pcs Flat Terminals note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.