Description: 【Non Destructive Testing】: This probe allows for non destructive testing by piercing the insulation without stripping wires, enabling quick , current, and detection while preserving the integrity of the wire 【Retractable Piercing Probe】: Designed with a spring loaded retractable probe, it offers automatic and easy operation, making it ideal for accessing wires in tight spaces efficiently 【4mm Standard Banana Plug】: Equipped with a 4mm standard banana plug that is compatible with most multimeters and test leads, ensuring easy connectivity and broad compatibility across various devices 【Versatile Application】: Great for car circuit detection and automotive diagnostics, this tool is essential for professionals in the auto power industry seeking reliable electrical testing solutions 【Quality Design】: Built to withstand rigorous use in automotive diagnostic tests and electrical repairs, this probe ensures long term performance in demanding environments Specification: Material: Nylon Copper Stainless Steel Size Chart: Length: 13.6cm/5.35inch Package Includes: 1 Insulation Wire Piercing Probe Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.