Product review (5 stars): Perfect for my GE water filter
I'm using my wrench on a GE GXWH30C filter and it works perfectly. It was definitely the right tool for the job. Not much to say here except that it was a genuine GE wrench and fit the filter case snugly in order to remove it. It's made from plastic, so I wouldn't say it's rugged, but I'd be surprised if it didn't last for the life of the filter. The only thing I could see that would possibly break would be the handle if the case was installed too tightly but I don't see that as a likely possibility, especially if the filter is changed regularly.

There probably are other ways to remove the cover from the GXWH30C, but even my plumber thinks this wrench is a good investment. Too bad it isn't included with the filter itself.