The Circuit Breaker Finder Accessory Kit can be used with Milwaukee Circuit Breaker Finder w/ LED as well all other Circuit Breaker Finders. The alligator clip adapter is used for locating the correct breaker of hot and neutral bare wires, and the light socket adapter enables you to locate the correct breaker of a light bulb socket. The Circuit Breaker Finder Accessory Kit also comes with a 3-Prong to 2-Prong grounding adapter.