Compatible and applicable: The quick battery terminal connector is mainly used for SAE/JIS A type car battery, the connection is firm and not easy to damage. Safety protection: The quick release device has a red positive "+" and a black negative "-", which are easy to identify to avoid the risk of electric shock. Material: The tinned pure copper battery terminal has good electrical conductivity and reduces the loss of transmission power. It has strong corrosion resistance and can be used for a long time. Widely Compatible: Suitable for battery terminal connectors for cars, trucks, buses, battery cars, new energy batteries, etc. Quantity: 1 pair of battery connector (1 × positive, 1 × negative); + pole inner diameter: 17.5 mm, pole inner diameter: 16 mm.