• 1/4" Push to Connect One Way Check Valve for RO(Reverse Osmosis) Water Filter,NSF Certified Plastic Quick Connect RO Fittings (6 pcs) KWD 4.500
• Hose Bib Quick Connect Adapter for RO (Reverse Osmosis) water filter,NSF Certified 3/4" Female Thread to 1/4" OD Push to Connect Plastic ro Fittings .（Pack 6） KWD 5
• Pneumatic Air Line Tubing Kit, 1/4 Inch (6.35MM) OD x 32 Feet Polyamide Nylon Tube and Push to Connect Fittings, 31 PCS Compressed Pipe and Accessories Kit KWD 12.500
• NSF Certified 3/8" O.D. Push to Connect Fittings for RO (Reverse Osmosis) Water Filter 30 pcs+30 feet 3/8" Water tubing. KWD 16