Feature:1. Zinc alloy structure, durable, high temperature resistant and environmentally friendly.2. With excellent electrical conductivity and corrosion resistance, also can protect battery column from corrosion.3. Including positive (+) and negative () terminals with spacers, no need to worry about the installation.4. Wide range of applications, suitable for car, boats, RVs, trucks, campers, ATVs, UTV vehicles, battery banks, etc.5. Excellent positive and negative battery terminals to increase strength and reduce corrosion.Specification:Item Type: Battery Terminal Top PostMaterial: Zinc AlloyPositiveInner Diameter: Approx. 17mm/0.7inNegative Inner Diameter: Approx. 16mm/0.6inFitment: Most models.Package List:2 x Battery Terminal Connector 2 x Battery Terminal Cover (Black/Red) 4 x Copper Ring 4 x Heat Shrink TubeNote:1. Please allow 0.1‑0.5mm difference due to manual measurement.2. Please Confirm that this product is suitable for your car before the purchase.