Generic Male/Female EC3 Style Connector w/3.5mm Gold Bullet Plug(pack of 5 pairs ) The shell adopts imported nylon material, fire retardant and 30 + 250  C high temperature not to distort, not melt! The conductor adopts the national standard pure copper plating, and the conductive performance is good!The male plug is in contact with precision and perfect combination. U-shaped concave design for solder joints, easy to weld easily. The thickness of the gold-plated layer is rated at 60A and the maximum can reach 80A Easy to use