Feature 1It has good electrical conductivity and corrosion resistance, which can reduce voltage distortion and transmission loss. 2Wide application, mainly used for battery terminal connectors for cars, trucks and caravans. 3The battery terminal is made of copper, which is more stable than other materials of the same type. 4The wiring is convenient to connect, and the connection is firm, and it is not easy to be damaged. 5Package including 2pcs terminal clamps connectors and 6pcs copper ring, which is made to meet your needs.Item Type: CopperBatteryTerminalClampsConnectorsKitMaterial: CopperPostive Inner Diameter: Approx. 16mm (5/8in)Negative Inner Diameter: Approx. 17mm (11/16in)Fitment: Universal .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List2 x CopperBatteryTerminalClampsConnector6 x Copper RingNote1. If you have any questions, please feel free to contact us, I will try my best to solve your problem as soon as possible until you are satisfied. We are very confident in our products. If you get it, you will not regret it!2. Please allow 0.3‑0.5mm difference due to manual measurement