1、Wire Reducer: Used to convert 4GA to 8GA to facilitate the connection of the amplifier. 2、Brass Material: Made of high quality brass material, nickel‑plated, corrosion resistant and durable. 3、Stable Transmission: High conductivity, effectively improving the transmission of sound quality. 4、Easy to Install: No need to crimp, just use screws to clamp, which is convenient and fast. 5、High Reliability: Manufactured to meet standard specification, strictly follow factory quality control. Item Type: Wire Reducer Material: Brass Surface Treatment: Nickel Plated Suitable Specifications: 4GA Length: Approx. 46.3mm/1.82in Wiring Diameter: Approx. 11.8mm/0.46in Scope of Application: Car 2 x Wire Reducers