1Solid Connection: The clamps provides a reliable positive and negative connection to ensure the stable transmission of current and avoid sound quality degradation and equipment damage caused by poor connection. 2Safe and Stable: This pair of battery clamps adopts a reliable design and manufacturing process, with good durability, to ensure long term stable use, to protect the safety of your vehicle or Marine audio equipment. 3Wiring Holes: There are three wiring holes on the clamps, 1pcs 0/4GA input to 2pcs 4/8GA output, please check the size carefully before purchasing. 4Wide Application: This pair of battery clamps is suitable for a variety of scenarios such as cars, ships, yachts and motorhomes to meet your different audio modification needs. 5Simple to Use: After a variety of performance tests, battery terminal clamps are easy to install and use, convenient and quick, saving your time and energy.