Competition battery/ground screw type terminal 1. Simple to operate and Convenient to use. 2. Allen sets Screws to hold wire securely. 3. Help to enhance your car's under-bonnet appearance, or complete your in-car stereo installation. 4. Perfect for advanced audio technology, commercial use, heavy-load lighting or power Inverter charging systems. 5. Positive and negative terminals accept one 2 gauge, one 4 gauge, and two 8 gauge connections.