The 1-1/4" PEX × 1-1/4" FNPT No Lead Brass Adapter from Mueller Streamline is designed for seamless transitions between PEX and threaded piping systems. Made from durable brass, this adapter ensures long-lasting performance and resistance to corrosion. Its no-lead construction complies with safety standards for potable water applications, making it a reliable choice for plumbing projects. The 1-1/4" size allows for compatibility with standard PEX and FNPT fittings, ensuring a secure connection. This adapter is ideal for both professional and DIY plumbing applications.