1 Pair Automotive Battery Terminal Leak-proof Battery Terminal Connectors Wrench Lock for Car Auto Accessories Positive NegativeFeature:1. Durable Material: Post Battery Terminals is made of brass, providing high conductivity, maximum current flow, and durability.2. Scope of Use: The galvanized copper wire terminals of Quick Release Connectors are free of corrosion, suitable for marine, automobile or outdoor use.3. Wrench Design: Battery Knob Switch has multiple wiring modes, wrench design, and can quickly fix the battery stake.4. Adjustable Diameter: The diameter of Battery Connectors can be adjusted. Release the safety lock to adjust the connector diameter, which is suitable for most battery terminal sizes.5. Satisfaction Guarantee: If you have any issues, inquiries or need assistance, please feel free to contact us directly.Specification:Origin: Mainland ChinaName: automobile battery pile headMaterial: brass+iron galvanizedProcess: die-casting processColor: black, redQuantity: one pair (positive+negative)Positive terminal compatible size: 18mm/0.7inNegative compatible size: 16.5mm/0.6inFixing method: wrench lockingFunction: power connection, stable current, and battery protectionNote:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you Please allow 1-2cm measuring deviation due to manual measurement. 1 x Positive pole of Battery Terminals Connectors1 x negative pole Battery Terminals Connectors2pcs x Acid proof pad1 x Wrench