Samyo 1 Pair of MC4 Solar Panel Branch Cable Connectors Adapter 1 Male to 3 Female and 1 Female to 3 Male 1 Pair of MC4 Solar Panel Cable Connectors for solar panel: F/MMM and M/FFF. Compatible with PV cables with different insulation diameters. Load capability with big current and high voltage. Waterproof and dustproof. With excellent aging resistance and UV endurance, it can be used in harsh environment. Strong pulling force capability. Quick and simple assembly and disassembly processing without the aid of any extra instrument.