Features *HIGH QUALITY MATERIAL: Constructed of solid brass, strong and to provide reliable power. *Stable and : Screw terminals have good conductivity and resistance to reduce voltage distortion and transmission loss. *Easy to Use: Direct installation without tools. Convenient wiring, firm connection and not easy to damage. for replacing worn and corroded connectors. *Conductive Lithium Battery: Brass copper material is more conductive than other materials. If your battery is a lithium battery, you should choose brass connectors. It is better to use the same metal between the battery board and the connector. *Package Contents: 1 x Brass Negative Extension Bolt Terminal, 1 x Brass Positive Extension Bolt Terminal, 2 x Stainless Steel Bolts, 4 x Stainless Steel Gaskets. Specification Product name: brass battery pile head Applicable range: 12V-24V Weight: 96g/pair, 106/pair Material: Brass Thread: M6 (external thread m6, internal thread m8), M8 (external thread m8, internal thread m8) Size: positive pole 17-19mm, negative pole 15-17mm Packing list 1 pair*brass battery pile head Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Made of standard material, quality assurance and practicality. Perfect function, bring you a wonderful experience. Every customer is entitled to a 30-day refund or replacement for damage/quality issues. If you have any questions, please feel free to contact us and we will solve it for you. Battery Pole Adaptor Pair With Male Thread M6/M8,Battery Terminal Connectors Set