Easy to install。Safety products, durable and long service life。High quality and beautiful design。Suitable for use in cars, boats or other vehicles。Provide comprehensive protection for your car audio system。Automatically cut off the power when the electricity is strong。Specifications:Material: Plastic and MetalElectrical connection: 1X0GA input -1X4GA outputSize: 4.1x4x1.6 inch / 10.5x10.2x4 cm (Approx)Packing: 1*distribution is blocked,Due to the difference in lighting and computer monitors, we cannot guarantee that the actual color is 100% the same as the picture.Due to different measurement methods, there may be an error of 1-2 cm.