Product review (5 stars): Gotta have it
Bought these for my son's townhome.  The hot water supply line was bulging.  Fortunately the washer supply line had not burst before we found the bulge.  Usually the first indication is the sound of gushing water if you're home or a wet basement if you're not.  These braided metal washing machine connectors are essential unless you want to pay a plumber to install easy on/off controls in the supply line above your washing machine.  They say to replace rubber supply lines every five years.  These weren't that much more than a rubber supply line and I believe they will last a long time.