HIGH-QUALITY MATERIAL: Our battery poles are made of high-quality zinc alloy, which is corrosion-resistant and durable. It offers a longer service life and better durability compared to traditional materials, with excellent conductivity to help reduce voltage distortion. Designed for long-term use. Positive and Negative Pole Distinction: Our battery poles are clearly marked for positive and negative polarity to help prevent electrical hazards. Ensure proper terminal connection for correct polarity. The improved material enhances conductivity and helps reduce heat generation. EASY TO INSTALL: The threads on our battery poles are precision-designed for smooth operation when tightening or loosening, allowing for easy installation and a secure, reliable connection. Ensures a tight fit to help prevent accidental disconnection. Wide Application: These battery terminals are compatible with standard 12V and 24V batteries used in cars, trucks, motorcycles, and marine vehicles. Suitable for use in automotive, truck, bus, and electric vehicle battery systems. Package Content: Includes 2 pairs of silver-colored battery terminals. Weight: 109g per pair. Designed for 12V or 24V systems. Positive terminal: 17mm, Negative terminal: 16mm. Durable design for reliable performance.