Tektrum 12ft Long PV Extension Cable with MC4 M/F Connectors for Outdoor Solar Panel (Set of 2) 12ft long photovoltaic extension cable with black color finish; 12 AWG wire meets TUV requirements A male MC4 (Multi-Contact) connector on one end and a female MC4 connector on the other end of the cable Standard MC4 connectors allow instant installation Sunlight, ozone, and UV resistant; Moisture resistant; Waterproof