OTC Mini-coil Cord Circuit Tester small handle with needlepoint stainless steel probe allows easy back probing and piercing. The special threaded probe comes with screw on alligator clip for additional versatility. It is useful in testing electrical circuits and locating shorts, grounds, and open circuits. It features 12 feet heavy-duty red coil cord lead, checks 6- and 12-volt systems, ergonomic slim designed clear handle, bright red high intensity/slim style replaceable bulb, positive contact-molded strain relief, heavy-duty stainless steel probe with insulated shaft and heavy-duty clip with positive soldered connection.