Sumnacon&reg; MC4 Solar Style Branch Panel Cable Connector (Y Type(1 to 4)) 1 Pair of Y Type(1 to 4) MC4 Solar Panel Cable Connectors1 male to 4 female(M/FFFF) and 1 female to 4 male(F/MMMM) Double seal rings for better waterproof effect. Compatible with PV cables with different insulation diameters. It can be used in harsh environment With excellent aging resistance and UV endurance. Created seal, design of dust proof. Load capability with big current and high voltage Quick & simple assembly processing and simple removal of plugs without the aid of any extra instrument. Strong pulling force capability Resistance of extra high & low temperature and fireproof. Lower contact resistance