Amazon.com: Utah Pneumatic 4mm Push To Connect Air Fittings Quick Connect Kit Pneumatic Airline Tee Straight Union Air Splitter Push Elbow – Air Ball Valve Air Manifold : Industrial & Scientific
Amazon.com: CEKER 1/4" NPT Push to Connect Fittings Air Fittings 6mm Tube Od Air Line Fittings Pneumatic Fittings Push in Connectors Air Hose Quick Connect Fittings 5Packs : Industrial & Scientific
Push to Connect Composite Air Fitting - Male Banjo (PH)
Airtac NPLF1/4-1/4 Push to Connect Fitting, Female Elbow - Trimantec
Straight Push Connectors 6mm to 4mm Quick Release Pneumatic Connector Plastic Union Tube Fitting Grey 5Pcs - Walmart.com
Pneumatic fitting elbow 1/4 in. tube press-in 1/8 in. NPT male - AndyMark, Inc