These cables are used between photovoltaic arrays with Multi-Contact (MC4, Solarline2) cable connectors. This extension cable is 3' long. The wire is a black UL listed 4703 37 strand 12 AWG sunlight resistant cables. They have a male connector on one end and a female connector on the other end. Use them to extend module output cables or cut anywhere along the wire to obtain the needed length of male and female cable to run from string of modules to a combiner box or to a longer cable. Shipping weight 8 oz. All products shipped from USA. Please email us at Sales@Win-SolarLLC.com for international shipping rates.