10 pairs of MC4 Male/ Female Solar Panel Cable Connectors Double Seal Rings for Better Waterproof Effect -10 pairs of MC4 Solar Panel Cable Connectors(10Pcs of MC4 Male, and 10Pcs of MC4 Female) -Compatible Mc4 -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 -Load capability with big current and high voltage