Material: The battery terminal is made of galvanized copper sheet, offering excellent electrical conductivity and reduced transmission power loss, ensuring long-term use. Easy Installation: The nuts are designed to securely hold multiple cables. Simplifies wiring modifications for quick and easy installation. Power Output: The battery cable ends are compatible with 6/12 volt positive or negative battery posts. Two colors, black and red, help distinguish positive and negative connectors. Portable Size: Positive battery terminal hole diameter: 19 mm / 0.75 inch. Negative battery terminal hole diameter: 17 mm / 0.67 inch. Lightweight and easy to carry. Wide Application: Suitable for various vehicles including motorcycles, cars, trucks, boats, ATVs, caravans, and RVs.