Product details of 6V 12V 24V Automotive Voltage Tester Car Circuit Test Light Test Pen 6V 12V 24V Automotive Voltage Tester Car Circuit Test Light Test Pen High Quality Product for Professional Daily Use Support all 6V / 12V / 24V Unique Long Life Light Tube, Also Comes with Metal Cover Cap Serrated Surfaces for Anti-Slip Gripping and Improved Handling Designed for High Productive Usage for Probing Electronic Faults for Hobby and Automotive Fine Finished Brass Material for Extra Durability and Resistance to Corrosion Simple and Reliable Operation, Compact During Storage andSuitable for Portable Use