Description: 【High quality material】: Battery Terminal Connectors are made of high quality copper material, which is durable, has excellent electrical conductivity, has good performance, and has a longer service life. 【Function】: The Battery Terminal Stud Connector battery terminal is used for battery charging, and the battery terminal stud adapter is used for battery terminal extension. 【Battery Terminal Connector】: Retrofitted pile head with variable diameter, copper head with variable diameter, positive pole 17 to 19mm, negative pole 15 to 17 mm. 【Features】: Battery Terminal Charging Posts are strong, durable, and wear resistant, making them ideal auto parts. 【Easy to install】: Battery Terminal Junction Stud Post can be installed directly without modification, the installation is more convenient and fast, and it can be tightened or loosened by hand. Specification: Positive 17-19mm Negative 15-17mm Material: Copper Optional: Style A: 6 outside and 8 inside Or Style B:8 outside and 8 inside Or Style C:0.375 outside and 8 inside Size Chart: 11cmx7cmx2cm/4.33inchx2.76inchx0.79inch Package Includes: 2 Battery Terminal Connectors Note: Please allow slightly errors due to manual measurement and different monitors.