Without stripping or soldering, simply insert the wires and press them together with pliers without breaking the circuit in the electrical installation, very quick and easy. .This splitter is used to divide one circuit into two or two into one, so that one of the four holes is not energized. Safety insulation stamped design, two-pole locking, no loosening, lightweight and beautiful appearance, withstands high voltage. .The connector is made of polypropylene insulation material (for stability and chemical resistance) and brass terminals (for electrical conductivity). The plastic material of the quick connectors is flame-retardant and environmentally friendly. The brass is protected by a zinc plating, which extends the rust protection time, extends the service life, and does not affect conductivity. .Wide applications: Suitable for universal detachable cable connections; Suitable for single- or multi-core conductors up to fine stranded copper wire; Suitable for dust-tight and conductive demanding electrical systems. Connectors with different colors allow for easy identification and quick selection.