3/4 Whole House Water Filter Housing Wrench Use With Model #HF-150A True Value #529-096 Or Model #HF-360 True Value #583-328.The Culligan SW-2A housing wrench fits the following water filters: Culligan models HF-150A HF-160 HF-360. The wrench is designed to loosen the bottom of the filter housing during cartridge replacement.Culligan SW-2A is a wrench used to loosen bottom of housing during cartridge replacement.Makes changing water filters easy.Use with Culligan HF-150A HF-160 or HF-360Package includes: SW-2A