Filter Housing wrench for 4.5"OD Filters

The PRO+AQUA Housing Wrench is used to loosen the filter housings when changing filters. The spanner wrench fully incloses the housing and provides security with four teeth that lock onto the housing to ensure even force distribution and no slippage. This wrench fits all PRO+AQUA systems that use a 4.5" OD filter as well as many other brand housings.