Vktech MC4 Flex Adaptor Cable Y Branch Connector 1F2M 1M2F for Solar Panels (5Pairs) A perfect solution to parallel connect multiple panels together Electron-beam cross-linked compounds UV and ozone resistant Nominal Voltage: 1000 V DC ;Temperature rating: -40 degree ~ +105 degree;Ambient temperature: 25;Flame Retardant Grade: UL94-VO; The Y MC4 Solar Cable Connector Set includes one Y style MC4 cable connector one female to double male (F/M/M) and one Y style MC4 cable connector one male to double female (M/F/F). Length: approx. 32cm