Application: Used to detect power, ground and find shorts and breaks in wires. Circuit Tester applicable to 6V / 12V /24V DC automotive electronic control system. Quickly check automotive headlights, taillights, turn signal circuits, faulty sockets, connections, fuses, broken wires and more. Material: ABS plastic shell, durable steel probes, flexible wire lead has good tensile strength. The ergonomic slim design ensures that you hold the handle tightly. Probe Pen: Durable-sharp steel probes extend into the fuse box or pierce the insulation to contact the wires, so you can protect your hands from any harmful substances. Features: The reinforced spring prevents damage to the test leads at the bottom of the handle. LED in the handle top, Red/green LED indicator light. The impact-resistant handle ensures the safety of the bulb inside. Wide Range: When testing short circuits around houses or large vehicles, the extra-large 49inch cord provides great flexibility, range and freedom. The long probe with alligator clip ensures that you can reach narrow places. Specification: Material: ABS+Metal Color: As shown Test Pen Length: About 15mm/0.59inch Clip Length: About 11mm/0.43inch Cable Total Length: About 125cm/49.21inch Voltage: 6V 12V 24V Package includes: 1pc x Electric Circuit Tester