T-connector - standard plastic t-connectors for tubing
Plastic Push InTube Fittings - 2-Way Divider 5/16" OD
Amazon.com: SNS Straight 1/4" Tube OD Plastic Union Pipe Tube Fitting Straight Pneumatic Connector(10 PCS) SPU-1/4 : Industrial & Scientific
1/2" 3/4" Male Thread Pipe Fitting Straight Plastic Hose Tube Connector Air Fuel | eBay
air tube connector 3 Way Y Type PY8 plastic pipe fittings with lowest price High quality 1pcs Free shipping | Makerele
Reducer tube connectors - reducer tube connectors in plastic for pump tubing .
Amazon.com: PureSec 3/8 inch Tee Connector Push to Connect Fittings Plastic Quick Fitting for water purification&RO System (5, 3/8" Tube O.D.X3/8" Tube O.D.X 3/8" Tube O.D.) : Industrial & Scientific
Push to Connect Fittings Tube Straight Connect 8 Mm or 5/16 od
Quick Disconnect Tube Fitting with Auto Shut-Off - Acetal Plastic - Panel Mount Straight - 1/4" Bulkhead Plug x 3/8" Barbed Hose - Walmart.com