Superb Wrench SPBW-4 Heavy Duty Metal Water Filter Housing Wrench (3.8 inch Inside Diameter).</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Inside Diameter: 3.8 in</li><li>Made of heavy duty 7 gauge steel that will not break， bend or strip the water filter housing unit</li><li>Fits: Pentek SW-1 # 150539， Aqua Pure Reverse Osmosis， SW1 Slim Line， SW-1， Ametek # 150294， Whirlpool WHKF-DWH and Whirlpool WHKF-DUF</li><li>Handle is rubberized and longer than a standard filter wrench which gives you extra leverage</li><li>Made in the USA</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/2196OKCaSXL.jpg' noproxy></br>