The multimeter wire piercing probes are made of stainless steel and plastic, resistant to cold and temperatures for flexible use. The spring loaded double V clips hold the lead centered on the piercing pin. The insulation piercing clip ends with a 4 mm banana socket, allowing connection to standard 4 mm plugs. Voltage rating is 30 VAC / 60 VDC and current rating is 5 A. Designed for safe use in manufacturing, commercial, electrical and engineering environments. How to use: 1) Unscrew the probe tip to open the thread. 2) Adjust the spring clip so the probe clamps onto the wire to be measured. 3) Insert the multimeter probe into the tail socket. 4) Measure the voltage with the voltmeter. Suitable for equipment maintenance, electrical maintenance and automotive maintenance. This tool helps you easily and efficiently complete voltage lead tests. Use scenarios: Automotive electrical diagnostics: test wiring in harnesses and connectors without stripping insulation. Electrical panel and control wiring verification in manufacturing and service environments. Onsite maintenance for industrial equipment and vehicles.