Features: Made of high-quality materials, durable and easy to use. Constructed from zinc alloy for long-lasting performance. Designed for use with top posts, jambs, truck, and marine battery terminals. Converts side-terminal batteries into top-post configurations. Each terminal includes a hex nut that can be tightened with a wrench. Wire diameter: 8mm; wire length: 10mm; clearly marked positive (+) or negative (-) terminals; positive (+) diameter: 17-19mm; negative (-) diameter: 15-17mm. These terminal connectors are designed to charge side-terminal batteries in vehicles and to convert side-terminal batteries to top-post configurations. The side battery terminals are compatible with standard automotive battery wiring. Suitable for use with car, boat, truck, and other powered vehicle batteries. Package Includes: 1 x Positive Battery Terminal Connector 1 x Negative Battery Terminal Connector Specifications: Material: Zinc Alloy Size: Approx. 2.4 x 3.8 cm / 0.94 x 1.49 inch Color: Silver Thread Diameter: 8 mm / 0.31 inch Thread Length: 10 mm / 0.39 inch Note: 1. Please allow 1-2 cm errors due to manual measurement. Ensure you are comfortable with this before ordering. 2. Due to differences in monitor displays, the actual color of the item may vary slightly from the image. Thank you for your understanding.