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Equal PT 1/4 (12.5mm / 6.6mm) Straight Push Fit Tube Union Connect Fittings + 5 Lock Clips RO Reverse Osmosis Pack of 5: Amazon.com: Industrial & Scientific
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iSpring Quick Connect Fitting Reverse Osmosis Drinking Water Fixed Elbow Fitting, 1/4 In. NPT x 1/4 In., 2 Pack in the Push to Connect Fittings department at Lowes.com
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Amazon.com: PureSec RO Fittings Y Type 1/4 inch Tubing OD Use Two Way Water Line Splitter Quick Connect Tube Fittings Push to Connect Plastic Connectors for Water Filtration System(Pack of 10) :
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Pneumatic Tube Fittings,Plastic Push to Connect Fittings, 8mm Tube Fitting 11 pcs, Push Fit Fittings Pipe Tube Fittings. (6mm Tube OD): Amazon.com: Industrial & Scientific
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Parker - Push-To-Connect Tube Fitting: Tube to Barb Connector, 1/2 x 1/2″ OD - 13020755 - MSC Industrial Supply
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John Guest 3/8 in. O.D. x 1/4 in. O.D. NPTF Polypropylene Push-to-Connect Reducing Fitting 803159 - The Home Depot
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John Guest 5/16 in. O.D. x 5/16 in. O.D. NPTF Polypropylene Push-to-Connect Coupling Fitting 803199 - The Home Depot
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12mm Quick Fitting, 1/2” OD Push to Connect Pipe Tube Straight Fittings, Pneumatic Air Line Connector 10Pcs - Walmart.com
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1/4" 3/8" OD Quick Connect Push Connect Garden Irrigation Hose Fittings for Reverse Osmosis Water Filter Fittings 1 pc - AliExpress
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SharkBite 1/2-in Push-to-Connect Standard Tee in the Push to Connect Fittings department at Lowes.com
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