Malida Tank Ball Valve 1/4" FPT by 1/4" ,3/8" OD Tubing quick connector for RO Water Reverse Osmosis Filter system set of 4 Tank Elbow Ball Valve 1/4" OD Tubing quick conncetor by 1/4" female thread,2pcs Tank Elbow Ball Valve 3/8" OD Tubing quick conncetor by 1/4" female thread,2pcs RO Water Reverse Osmosis Filter system