[Dense Brass Coil:] The internal coil of the relay is made of high-quality brass wire, the coils are numerous and dense, and can quickly generate a magnetic field after being energized. [Rugged Shell:] Alloy metal shell, strong and not easy to rust. High quality brass contacts quick start motor. [Long Service Life:] Strictly control the material and details of each structure of the product to ensure quality and performance. [Precise Size:] The size of the socket or interface of the relay is exactly matched and can be installed directly without any adjustment. [One-year After-sales Guarantee:] We are committed to providing the highest quality after-sales service. If the product has any quality problem within one year, please feel free to contact us.