This 12AWG TRX plug to Banana plug connector constructed from the highest quality materials to ensure that you get the best connection possible when you charge the batteries. Specifications: Input Connector: Male 4mm Banana Plug Output Connector: TRX Plug Connector Wire Type: 12AWG silicone and copper Length: 30CM/11.8inch Package includes: 2 xTRX Plug to 4.0 Banana Plug RC Battery Charge Cable Notes: If you have any questions or needs, please contact us directly. If the product has quality problems, please choose to apply for a refund. Please choose a matching connector plug adapter, otherwise the device may not be used or the device may be damaged. If you need other models with 4mm banana plug connector adapters, please visit our store. You can also contact us to customize the products you need.