3/4" Flexible Corrugated Hose Water Heater Connector (24" Length)

Did exactly what it was supposed to do. The flexible line makes it much easier to hook up the water heater without having to be too accurate on where the plumbing lines come down.

they work as long as the first 2" from the nut is perfectly straight. The problem is if you bend them in a horseshoe or an "s" shape as soon as you let go it wants to straighten out. It takes a decent amount of force to stay in the shape you bent it and this puts pressure on what you are connecting to. Other than these issues, they do work. What I've learned over the years is that leaks has a lot to do with the quality of the rubber washer inside of these various brands of flex lines. The worst of them have hard washers that don't seal well, and the best of them have very soft rubber washers that seal easily. These do have decent washers, just really hard to bend the line and doesn't hold its shape.