The SEALFAST 4" x 3" Brass Fill Adapter without lugs is designed for efficient fluid transfer in various applications. Constructed from high-quality brass, this adapter offers excellent corrosion resistance and durability. The 4" x 3" size ensures compatibility with standard fittings, making it easy to integrate into existing systems. This fill adapter is ideal for use in fuel, oil, and water transfer applications, meeting industry standards for safety and reliability. A must-have for professionals seeking a robust solution for fluid management.