Introducing the Gearwrench 129D circuit tester, a must-have for any automotive electrical needs. This tester has the capacity to test both 6V and 12V DC circuits, and features a replacement bulb with model 12675. The tester also includes a 4-1/2 ft. lead wire for convenient use, and is suitable for low voltage applications.

Not only is this circuit tester functional, but it is also made by trusted brand Gearwrench and comes with a manufacturer's warranty of 1 year. Don't let electrical issues slow you down, add the Gearwrench 129D circuit tester to your toolbox today.