The PFW190 is a universal 1/2 circle water filter housing wrench that fits most Standard Filter Housings.
The housing wrench as a "C" style open end that fits around most standard housings.
The PFW190 wrench can be used for standard size and slimline water filter housings. The wrench has a 3-5/8" C-Style opening.
Use for twisting off the water filter housing sumps.
Do NOT use the universal PFW190 wrench to tighten the housing sumps. Overtightening the sump can cause damage to the o-rings and make re-opening the housing sump difficult. You should only hand tighten the housing sump.
The universal filter wrench makes replacing water filters easy.