This tool set includes the LED Flashlight with Work Light (Cat. No. 56028) and the GFCI Receptacle Tester (Cat. No. RT210). The Klein Tools LED Flashlight with Work Light is a better alternative than a large, heavy flashlight when working in low light areas. This light is both a bright, focused flashlight and a broadcasting flood light in one small package. Just secure the light on a metal surface with the strong magnet for convenient hands-free function. Klein Tools Receptacle Testers are designed to detect the most common wiring problems in standard and GFCI receptacles. A convenient chart on the tester helps determine wiring condition in outlet, based on LED lights results. Conditions indicated: open ground, reverse polarity, open hot, open neutral, hot/ground reversed.