2-4 gauge; Terminal pin diameter: 0.35 inch; Voltage: 12-36 Volts DC; Capacity: 175 amps Simplified installation. Insert the wires into the terminal pins, then solder or crimp them. The connector ends are identical, so either end is suitable for connecting to the power or load side The bottom of the unit has a form-fitting rubber boot to protect against dust, moisture, and corrosion. Connector kit allows for convenient connection/disconnection of power to a winch or other electrical device such as a remote battery charger, trailer, etc. It is very easy to use and install. Insert the wires into the terminal pins, then solder or crimp them. Although all connector components can withstand high voltages, the connector is designed for low voltage DC (12-36 volts DC) use (high voltage connectors typically have a plug and socket arrangement, so that the plug, or power end, can be fully enclosed). The terminal pins accept 2-4 gauge wires. Specifications: Model: SC175 Connector Size: 3-1/8 x