Housing Wrench

Circular plastic wrench designed to loosen bottom of filter housing during cartridge replacement.No. SW1: For undersink filters with 3/8" inlet/outlet, for model No. US-550, SY-5167, and SY-5197No. SW2A: For whole house filters with 3/4" inlet/outlet, Culligan model No. HF-150, HF-160, and HF-360No. SW3: For whole house filter with 1" inlet/outlet Culligan model No. HD950No. SW-5A: For use with #10 Big Blue whole house housings