DIYers and plumbing pros, this Anderson Metals brass anchor coupler is exactly what you need when you're connecting pipes of different diameters in a straight run. The 3/8 inch female NPT threads create a tight, secure seal when connected to male threaded pipes - way better than straight threads for preventing leaks. Made from solid brass, this fitting offers serious corrosion resistance and can handle temperatures from -65 to 250 degrees F, making it suitable for various plumbing applications. The 1.31 inch length gives you enough working room for proper installation, and the brass construction means it plays nice with copper, plastic, aluminum, and steel pipes. What's really handy is how this anchor coupler helps extend pipe runs when you need to connect different sized pipes heading in the same direction. Anderson Metals has been making quality fittings since 1951, so you're getting decades of manufacturing expertise in every piece. Whether you're working on residential plumbing, industrial applications, or any project requiring reliable pipe connections, this brass coupler delivers the durability and performance you need. The low magnetic permeability is another plus for certain applications. It's one of those essential plumbing components that might seem simple but makes all the difference in creating secure, long-lasting pipe connections that won't let you down down the road.