Superb Wrench SPBW-2 Heavy Duty Metal Water Filter Wrench (6.25 inch Inside Diameter) N/A Made in USA Fits Big Blue housings with an Inside Diameter of 6.28 in. Made of heavy duty 7 gauge steel that will not break, bend or strip the water filter housing unit Fits: 3M-Cuno-Aqua Pure AP800, AP801 / AP-801, AP801-C / AP801C, AP801-T / AP801T, AP801T-C / AP801TC, AP801-1.5 / AP-801-1.5, AP801-1.5-C / AP801-1.5C, AP801T-1.5 / AP801-T-1.5, AP802 / AP-802, AP802-1.5-C / AP802 1.5C, Watts FH5000 Series and Watts FH10000 Series and Hydronix Big Blue housing Handle is rubberized and longer than a standard filter wrench which gives you extra leverage Made in the USA