Made to test sensitive circuits with a convenient power source of a car cigarette plug for in vehicle testing. Offers light and sound indicators. Safe for use with automotive airbag testing. Kit includes: clear acrylic hand tool rugged nickel probe built-in flashlight for under dash viewing red and green LED to indicate power and ground audible buzzer to indicate power/ground contact additional 4" probe screw-on banana clip screw-on alligator clip plastic storage case This tool is computer and airbag safe.