Y Type(1 to 4) MC4 Solar Style Branch Panel Cable Connectors These are Y Type(1 to 4) MC4 Style Branch Connector Cables which are approved by CE, TUV. This Y Style MC4 compatible Solar Cable Connector Set is a perfect solution to parallel connect multiple panels together in a solar field, and is typically used in parallel applications. 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) Quick & simple assembly processing and simple removal of plugs without the aid of any extra instrument Compatible with PV cables with different insulation diameters Resistance of extra high & low temperature and fireproof