UniversalThe voltage tester pen can be used for cars, trucks, boats, trailers, RVs, motorcycles, snowmobiles and other maintenance. The test pen is used to check fuses, switches, armatures, distributors and electrical circuits to quickly and easily locate shorts and open circuits. High Performance The circuit probe tester adopts digital display, allowing you to see the voltage more clearly, accurate voltage readings, accurate to 0.1 volts. Professional workmanshipThe car voltage tester is Manufactured under strict quality control standards to professional factory specifications. The tension test pen with probe is convenient to use, allowing easy drilling and hard to reach areas, and the spring wire can be stretched as needed. High quality materialsThe car voltage tester is made from high quality ABS copper material. This product has the characteristics of long service life, high strength and long service life.