Review on 🔧 Superb Wrench SPBW 3 Filter Diameter: Your Ultimate Solution for Filter Maintenance by Joshua Coulter

Don't hesitate to buy this one. For years I struggled to get the reverse osmosis filter canisters loose with the small plastic wrench that came with the purchase. Eventually the canisters became so tight that I couldn't loosen them, although I hit the plastic key with a hammer and almost destroyed the filter. This key greatly simplifies the process. It's a very strong metal and long enough to develop a lot of torque. Just buy and you're done.