Check the listing for details. 4Pcs Test Probe Pins 1mm Copper Multimeter Extention Probe Needle Gold. Condition: New. Listed at 13.95 USD. This test probe pin is used for replacing the head of the probe during the inspection and maintenance of the power system. It is widely used in electrical maintenance, automatic electrical equipment, physics teaching, laboratories and other places for testing and debugging.SpecificationColor: GoldMaterial: CopperProbe Length: 24mm / 0.94"Total Length: 33mm /1.3"Pin Diameter: 1mm / 0.04"Thread Size: M3Package List: 4 x Test Probe PinsAdvantageMade of gold-planting copper, it has stable conductivity, not easy to rust, convenient to assemble it.Moreover, the probe is light and compact, which is easy to store and carry outside.There are 4 pieces in the package for you to replace quickly.InstructionConnect it to the test probe, then test the machines with the pin.NOTEDon't contact others with the shape pin to avoid hurting.