Estone Auto Circuit Tester 6V 12V 24 Volts Voltage Gauge Car Test VoltMeter Light Bulb Designed for detecting faults in low tension circuits of traffic or transport machinery. It is suitable for maintenance on automobile, motorcycle, bulldozer, road roller High Safety And No Heat In Operation Innovative elastic wire with fine tensile property Compact, Light Configuration, With Holder For Ease Of Handling And Use