Review on Superb Wrench SPBW-5: Heavy Duty Wrench for 5.93 inch Inside Diameter Metal Water Filter Housings by Napoleon Robbie

I am the operator of a water treatment plant. I manage 30 different websites and change LOTS of filters. I cursed those ridiculous plastic keys for years. Eventually I found this key online and took it to a website where I left ONE set of filters unplugged for 2 months because I could NOT remove the case; I figured I'd have to do it at the end of the season; Remove the entire filter and bracket from the system and secure in a large vise. Instead I put a wrench on the filter housing and with a tiny twist the filter housing came loose. saves me a lot of work. I ordered 3 different sizes and wish I had found these keys many years ago.