INSULATION FLAME RETARDANT MATERIAL with excellent aging resistance and UV endurance, can resist severe weather such as heavy rain,snowstorm or heat for a long time; waterproof ring on connection is to seal out water and dust to prevent . Water and weather proof. IP67 rated. Double seal rings for better waterproof effect, Low transition resistance. Practical and easy connector used between Solar panel and switch box to prevent the reversal of current. Fuse with Male and Female Connector is excellent for protecting your devices, to avoid damage and wear in daily frequent plugging and unplugging process. Pass 10,00 bending test, this Waterproof Solar Fuse Connector is more reliable.Auto-lock equipment of male and female points render connections easy and reliable, which make you easy to install and make sure it 't fall off. Quick and easy connection of the solar cables to the photovoltaic system (solar panels, converters). Colour:black Material:plastic type:30A Package Contents: 15 x Solar Panel Connector 15 x diodes Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.