The Megger 241005-7 series duplex test lead with gold-plated Kelvin clip is for use with Megger DLRO10HD, DLRO10, DLRO10X, 247000, 247001, 247002, 247100, 247101, and BT51 digital low-resistance ohmmeters. This 7' (2 m) long duplex test lead measure both current and resistance when taking four-wire resistance measurements, which are more accurate than two-wire resistance measurements and allow low resistance values to be detected. The lead has a maximum test current input of 10 amp. The gold-plated Kelvin clip provides low contact resistance and has better resistance to corrosion and wear than a silver plated clip. The Kelvin clip directs current through one jaw and potential through other jaw when taking resistance measurements on cables and small wires. It has a jaw opening of 0.5" (1.3 cm).