OTC 3639 Extra Long Heavy-Duty Circuit Tester Long 7 inch probe shank allows access to difficult to reach areas for testing electrical circuits and locating shorts grounds and open circuits Includes a heavy-duty stainless steel probe with insulated shaft and a heavy-duty clip with positive soldered connection Features a 12 feet foot heavy-duty red coil cord lead checks 6- and 12-volt systems ergonomic slim designed clear handle and a bright red slim style replaceable bulb Positive contact-molded strain relief