Store › Reverse Osmosis Dual Wrench Image 1 of 1 Reverse Osmosis Dual Wrench $9.00 Filter housing wrench on one end and membrane housing wrench on the other. Quantity: Add To Cart Added! Filter housing wrench on one end and membrane housing wrench on the other. Reviews Reviewer Name Review Date Star Rating Description Posted on Etsy Product Show More You Might Also Like LBS-10 LeakBlock Sensor $59.00 Only 5 available Standard 4 Stage RO Filter Kit (No inline) $45.00 Standard 5 Stage RO Filter Kit - ALK $89.00 Standard 4 Stage RO Filter Kit $40.00 Standard 5 Stage RO Filter Kit - Subscription $50.00 every 6 months