The Eaton 307 Hydraulic Fitting Weatherhead Carbon Steel Adapter is a high-quality product designed for use in hydraulic systems. Made from durable carbon steel, this adapter ensures long-lasting performance and reliability. With a unit quantity of 4, customers can easily expand their hydraulic system by adding more adapters as needed. The Eaton brand is known for producing top-notch fittings and adapters, making this product a trusted choice for various industrial and commercial applications.