【High quality】Automobile circuit tester Made of ABS, high toughness, impact resistance, heat resistance, low temperature resistance. Sharp superhard steel probes are used to reach hard-to-reach areas，The metal clamp is made of a strong forged alloy and can be securely clamped to most end sides., 【Excellent Ductility】High uality spring coil up to 80 inches long, flexible and durable, with great elasticity, strong stretching ability, free expansion. Equipped with large alligator clip, with rubber protection head, easy to operate with one hand, 【Wide Test Range】6-24V voltage test lamp with heavy duty grounding clamp and insulator. Check circuits quickly and easily while ensuring your safety.It is convenient to check all kinds of vehicle circuits, detect the power supply, and find the short circuit or break of the wire., 【Indicator Light】Unique light emitting diode , will not heat when using, safe and comfortable. When replacing the indicator light, you can replace it by unscrewing the metal cover of the pen head, which is convenient and quick., 【Easy To Store And Carry】The product is small and lightweight, compact structure, easy to carry. Easily placed in a garage drawer, repair kit, or the trunk of a car. (Including-1 * circuit test pen, 1 * spring wire and large alligator clip, 2 * neon lamp tube)