suitable for many occasions

and practice patience

Use tongue coating cleaning gel instead of toothpaste

intelligent lighting

Car Truck Circuit Test Pen Style:Black wire digital display (3-70V) suitable for many occasionsDESCRIPTION This 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