1. Kelvin Fish Clamp Test Line, Wear-Resistant//Easy To Plug And Unplug 2. The Four-Wire , Which Also Call Four-Terminal Measurement Technology And Kelvin Measurement , Is An Impedance Measurement In Electronic Circuits And Is Mainly Used For Accurate Measurement Of Resistor Resistance. 3. The Voltage Difference Generated By Wiring Resistance And Wire Resistance Is Almost Zero And Does Not Affect The Voltage Measurement Results. 4. Contact Resistance. Since Only A Very Small Part Of The Current (So Small That It Can Be Ignored) Flows Through The Voltmeter, It Does Not Affect The Current Measurement Results. 5. Product Impedance, The Resistance To Be Measured Is Low Resistance, And Can Also Be Measured Accurately. Product Model:J.70075 Connection :Transfer Treatment:Nickel Plating/Gold Plating Overall Length:Line Length 1m Note:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use. Color:As Shown Material:Copper+PA+ABS Size:about 123mmx21mm Package Contents: 1 String * Black Low Resistance Tester Cables 1 String * Red Low Resistance Tester Cables Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.