BTSKY Y Branch MC4 1 Male to 4 Female (M/FFFF) and 1 Female to 4 Male (F/MMMM) Solar Panel Cable Connectors 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) The Conductor Pin is Tinned Copper: It makes a rock solid connection after you crimp the pin to the wire, and these are operated perfectly under heavy load. No Longer To Deal with Fixing the Connectors On The RoofThe O ring on connection is perfect to seal out water and dust to prevent corrosion. It is still able to disconnect if needed, and these MC4 connectors will survived rain, high force winds and snow. Quick & simple assembly processing and simple removal of plugs without the aid of any extra instrument. Total length of the Cable: 50mm(19.68 inches)