Features: Premium brass battery terminal connectors ensures superior conductivity, featuring multi size compatibility for various battery terminals across automotive, motorcycle, and power equipment applications. Engineered with brass aluminum iron composite construction and screw tightened design, these connectors maximize contact surfaces area to minimize resistance while preventing loosening from vibrations. Ideal for vehicle owners, mechanics, and equipment operators requiring power transfers in cars, motorcycles, EVs, generators, and auxiliary electrical systems. Secures stable current flows during engine startups, jump starts, or multi device power distribution scenarios, even in humid/dusty environments. Precisions machined surfaces with oxidation resistant treatments ensures long term durability, enduring daily impacts and extreme temperature fluctuations without performances degradation. Specifications: Component: Aluminum alloy + brass + iron Size: about. 5.8x6.8cm/2.28x2.68in Package Includes: 1pc Battery Terminal Connector note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.