Features: 1.It has good electrical conductivity and corrosion resistance, which can reduce voltage distortion and transmission loss. 2.Wide application, mainly used for battery terminal connectors for cars, trucks and caravans. 3.The battery terminal is made of copper, which is more stable than other materials of the same type. 4.The wiring is convenient to connect, and the connection is firm, and it is not easy to be damaged. 5.Package including 2pcs terminal clamps connectors and 6pcs copper ring, which is made to meet your needs. Specification: Item Type: Copper Battery Terminal Clamps Connectors Kit Material: Copper Postive Inner Diameter: Approx. 16mm (5/8in) Negative Inner Diameter: Approx. 17mm (11/16in) Fitment: Universal Note: 1. 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 Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin