Features 1. Car Truck Circuit Test Pen: Circuit Tester for 3-70V DC Systems, used to detect power, ground and find shorts and breaks in wires. Designed to check car truck and various vehicle electrical circuits,used for power failure test, induction test, voltage test. 2. High Quality Material: Automotive Circuit Tester made of PVC plastic. Good quality not only can provide a safer guarantee Replacement for your life,but also good materials can increase product life. 3. Electrical Tester Pen: The digital display allows you to see the test results more clearly, give you a better using experience.Light in handle glows when circuit connection is complete. 4. Portable Size: This car circuit tester has portable size and easy to store, you can store this tool in your car easily. 5. Widely Use: 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. Specification Material: ABS Color: Red, Black Size: 19 cm Weight: 170 g Package Include: 1x Circuit Tester Pen