The 10FJ-4MFO Straight Reducer & Expander from Fittings Unlimited Inc is engineered for seamless transitions between pipe sizes in fluid systems. This fitting features a 10FJ inlet and a 4MFO outlet, making it ideal for various applications in plumbing and hydraulic systems. Made from high-quality materials, it ensures durability and resistance to wear and corrosion. Its straight design facilitates easy installation and optimal flow, making it suitable for both industrial and residential uses. This reducer/expander complies with industry standards, ensuring reliable performance.