- High-quality materials: The handle of the circuit tester probe is made of AS plastic, durable and resistant to electricity and heat. The metal probe and the digital display voltage tester pen offer long service life, wear resistance, and exquisite workmanship, greatly increasing durability. - Accurate reading: This circuit tester is equipped with an LED digital display, and the results are easy to read. The digital screen shows the precise voltage level, ensuring accurate testing and avoiding guesswork. Whether you are checking power, grounding or continuity, this test light provides fast and clear readings, making your work easier and faster. - Upgraded design: The high-quality 71-inch long PU spring wire of the car circuit tester is more flexible, lighter, and more durable than ordinary cable wires, and is heat-insulated and oil-resistant, suitable for daily use. Equipped with a large-sized alligator clip, it is easy to operate with one hand, and convenient to use and store. - Safe and portable: The tester is designed with safety as the priority, featuring a durable insulated handle to protect you from electrical hazards. It uses a lighter and smaller spiral spring wire than other styluses, so it does not take up much space in the toolbox or any other storage area. - Practical applications: Automotive electrical diagnostics for cars and trucks; testing power, grounding, and continuity in electrical repairs; field service and workshop use where compact, safe voltage testing is needed.