The 1-1/2 X 1 Inch Brass Crimp Reducing Coupling is a fitting used to connect two different sizes of PEX pipe together using crimping. Made from premium lead-free DZR EcoBrass, this coupling is designed for use with PEX pipe and PE-RT. With dimensions of 2.25 x 1.34 x 1.34 inches, this coupling is certified to various standards such as ASTM E84, ASTM F1807, and NSF/ANSI 372. It is a reliable and high-quality component for plumbing systems, ensuring a secure and efficient connection between different sizes of pipes.