These cables have Tyco SolarLok connectors to match the connectors on some SCHOTT, Day4Energy, GE and CSI Solar modules. These cables have a neutral male at one end and a negative female at the other so they can be used to extend the cables on the modules or be cut in half and used to connect to a roof-top j-box or combiner. This polarity works for most connections but is not guaranteed for all modules. Made with double insulated black #10 AWG, PV WIRE, USE-2 sunlight-resistant cable. Use the locking sleeve where a tool is required to disconnect.