1" 4-Way Side Outlet Tee - Furniture Grade PVC Fitting - DP's Bargain Basement
4 Way Connector | Modular Pipe Connector | Maker Pipe
Hose Fitting, 1/4 in x 1/4 in
Amazon.com: PureSec Union Tee Connector 1/4 inch OD Tubing/Hose/Pipe Use Quick Connect Plastic Fitting for Reverse Osmosis System(Pack of 5) : Everything Else