Car Truck Circuit Test Pen Style:Red wire spring wire digital display (3-70V) and convenient to use in

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Car Truck Circuit Test Pen Style:Red wire spring wire digital display (3-70V) and convenient to use inThis probe pen is ideal for checking circuits, fuses, switches and wiring on automobiles, trailers, boats, motorcycles and other low voltage systems. Connect the alligator clamp to the ground, then take the probe to test circuit. If the indicator light is on, there is electricity. FEATURES: Handle is made of plastic and the hardened & tempered carbon steel probe is chrome plated. The sharp steel probe easily pierces wire insulation to check circuitry.