Product review (5 stars): Awesome peace of mind.
I've been using these for years to replace factory hoses that don't have the metal 90Deg. fitting on them.  They work as advertised.  Complaints about the ease of threading them on are overblown(not everyone can tie their shoes)  You do have to check that they will work with your machine as some older washers allow so much flow that they think there is a failure and activate cutting water.  Also turn water on slowly they will trip if you blast the water on all at once. You also have to look closely at the device where it's pressed together there was a batch of them that would leak a very small amount of water from this seam(I haven't seen this problem for two years so they must have made a fix)
Use them they could save you a disaster of a flood...Look at the new hoses that come with your washer they all say replace after three years...how many people do? Check out the dishwasher and toilet one too very common failure point.