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 Note: .Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. .Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 2pcs 5K 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