Culligan Housing Wrench 4-3/4-In. is expertly designed to make cartridge s easier by loosening the bottom of housings efficiently. This wrench is compatible with a variety of Culligan models including HF-150(A), HF-160, HF-360(A), as well as ACE models 45025(A), 46764, and 49560(A). It may also be suitable for most standard or valve-in-head Whole House filtration systems that have 3/4-inch inlet/outlet connections. This tool is a reliable choice for maintaining your filtration system with ease. Model Number: SW-2A