Features: Provides a quick and easy parallel wiring solution for solar panels. Compatible with all MC4 solar connectors. Easy to install, reusable with a long using time. Dustproof, IP67 waterproof, won't be worn out easily. With excellent aging and UV resistance. 1 Male to 3 Female(M/3F) and 1 Female to 3 Male(F/3M). Load capability with big current up to 30A and high voltage up to DC1000V.