The Pomona PVLEAD1 Solar PV MC4 to 4mm Test Lead Set is a set of black and red MC4 to 4mm adapter tests leads for solar applications. The PVLEAD1 ensures safe current and voltage measurements on Photovoltaic (PV) modules and systems. The PVLEAD1's black lead is a MC4 (female) to 4mm sheathed banana plug on a 60-inch test lead. The PVLEAD1's red lead is a MC4 (male) to 4mm sheathed banana plug on a 60-inch test lead. The PVLEAD1 helps to Connect measuring devices to PV power plants, for use in regular tests, measurements, and troubleshooting on solar PV panels.