Usage Tips:6 pairs of MC4 male/female double rings waterproof seal solar panel cable connectors Install easily and quickly, come with 1 pair of hex keys Waterproof and dustproof, can be used outdoors in all weather conditions Self-locking provides a secure connection Specially designed to connect solar photovoltaic systems with high mechanical and weather requirements extreme weather conditions Product Description Specification: Rated voltage: 1000 V DC Rated current: 25 A (2.5 -4.0 mm2) Degree of protection: ip2*/IP67 Flammability rating: ul94-v0 Test voltage: 6000 V (50 Hz, 1 min) Safety: Class 2 Surge Category/Pollution Index: CATIII/2 Cable Adapter: od4.5 -7.0 (2.5-4.0 mm2) Resistance contact connector: 0.5 m; # x3 a9; Force insert; #x2264; 50 N Remove force; #x2265; 50 N Conductor material of connector: copper, tin Connection: crimp Insulator material of connector: ppo or PBT Operating temperature range: -40~+90 Fits cable 2.5mm2/4mm2/6mm2 (awg14/12/10) Snap in lock system Drawing Package Content: 6 x Male Solar Panel Cable Connector 6 x Female Cable Connector of the solar panel 2 x hex keys