Wide application This multimeter needle probe is designed for HVAC, electrical, and industrial testing, making it a versatile tool for professionals across fields. 4mm banana compatibility The standard 4mm banana design ensures compatibility with a wide range of multimeters and test leads, providing flexibility and convenience during use. Replaceable needle probe The probe features replaceable needles, offering a costeffective solution with extended service life and easy maintenance for ongoing projects. Multimeter vehicle test hook The test hook securely grips wires up to 4mm, enabling safe and efficient electrical testing in automotive diagnostics and vehiclerelated work. Use scenarios HVAC maintenance and installation Use the needle probe to test control circuits, sensors, and wiring in heating, ventilation, and air conditioning systems to verify proper operation and identify faults. Automotive electrical diagnostics Utilize the vehicle test hook to probe wiring harnesses and sensor circuits in vehicles, enabling accurate measurements while protecting insulation and reducing risk during diagnostics. Industrial equipment service Apply the probe for testing control panels, motors, and sensors on industrial equipment, taking advantage of broad meter compatibility and reliable needle connections.