Feature:1. ONE POSITIVE AND ONE NEGATIVE: Our kit has one positive and one negative battery charging terminal post terminal adapter, good for battery terminals used for battery terminal extensions.2. M8 MALE THREAD: This battery charging post terminal adapter has an M8 male thread for any battery that has a terminal M8 threaded hole (acid or lithium battery) extending to the standard top post.3. SPECIFICATION: Our battery charging terminal post adapter kit contains 19mm tapered positive (+), 17mm tapered negative ().4. HIGH STRENGTH AND CONDUCTIVITY: Our rugged battery charging terminal post connectors are high strength, conductive and corrosion resistant.5. EASY INSTALLATION: The M8 battery charging post terminal connectors are straightforward to install with no modifications and are easy to install by hand tightening and loosening.Specification:Item Type: M8 Battery Terminal Post ConnectorMaterial: BrassPositive And Negative: Red Positive, Black Negative.Package List:1 x Positive Electrode Terminal Adapter1 x Negative Electrode Terminal Adapter