2 Pack 18" Corrugated Stainless Steel Flexible Water Line, 1" NPT Port

This is great if you don't want to route more straight pipe lining and want something to reach in more flexible areas. Build quality is great compared to others I've seen.

I only give this 4 stars instead of 5 because one of the water lines threaded portion connecting to the water softener was leaking and I had to torque that down more than the others (Yes, I had wrapped Teflon tape on both ends of where the line connected and didn't get any leaking on one side). Granted, it leaked at the cavity between the line and the nut, so perhaps the rubber seal did not make perfect contact and allowed water to seep through unless I tightened down further.

I had to do some replumbing and disconnected the flex line. The old washer did not seal. I bought the two new ones and they are just like the original ones and fit perfectly. A lot easier than trying to hard line plumb.