This item is sold as one each. Two are required of the same Color, Gage and Amp Rating to make a connection.
You can use them to make quick disconnects on battery or inverter cables. Two connectors of the same size are required to mate together.
Manufactured by AC Terminals in the United States These battery terminals are cast with 131 contact copper which is 93% to 95% pure copper to provide high conductivity. The terminals are electro-plated with a bright tin finish to promote protection against corrosion.