Item Name: Full Insulation Test Probe Pucture Needles Set Multimeter Probe Banana Plug. Color: Red, Black,Yellow,Green,Blue each 1Voltage : Max 30VConnection: 4mm Banana PlugSurface Material: PA Nylon / BrassNeedle Material: Stainless steelFeatures:The white "cap"Please note the white part is not a cap for the needle.Actually it used for testing easily and protecting you, it has a V-shaped groove, which can also help you fix and aim the wire when you are testing the wire, so it should be flexible.Pierce the insulation outer surface of the cable and contact the conductor inside the wire.Max 4mm diameter test wire can be put into their V-notch.Safety and no damage: Its probes can easy pierce the wire but do not damage the cable itself . When remove the puncture probe ,the test lead can still be used like before.Application: Widely used in aotomotive,industrial,HVAC,electrical testing.Can work with most Test Leads&Kits - probes tail with 4mm standard banana plug (Both outcrop banana plug and safety plug)Package includes:5pcs Multimeter Probe *Please make