Features: 1.Application: The battery terminal connector has 4 terminals for wiring, designed for various cable connections, mainly used for SAE JIS Type A car rear batteries. 2.Low Loss: Tinned copper quick disconnect battery terminals not only provide good conductivity, but also reduce voltage distortion and transmission loss. 3.Size Details: Product inner diameter is 16?18mm/0.62?0.7in, positive inner diameter is 17.5 mm/0.69 in, negative inner diameter is 16 mm/0.63 in. 4.Correct Connection: Battery terminal connector is suitable for cars, vans, caravans, trucks, etc. Just make sure to connect the correct terminals for the correct polarity. 5.Easy to Install: Equipped with the wrench, easy to install, the wiring is easy to modify and the connection is firm, press the lever to fix the battery on the battery post. Specification: Item Type: Car Battery Terminal_x000D_ Material: Pure copper tinned, plastic housing_x000D_ Screw Diameter: Approx: 6mm/0.23in_x000D_ Product Diameter: Approx: 16-18mm/0.62?0.7in_x000D_ Positive Inner Diameter: Approx: 17.5 mm/0.69 in_x000D_ Negative Inner Diameter: Approx: 16mm/ 0.63in_x000D_ Application: Fit for SAE JIS A type automatic battery Note: 1. Please allow slight error due to manual measurement. Thanks for your understanding._x000D_ 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.