John Guest 3/8 Stem to 1/2 Hose Barb - Join 1/2 silicone tube

Beer line & Connectors John Guest Fittings – BrewKegTap

John Guest Tube to Hose Stem 3/8 inch Stem x 3/8 Hose (one supplied) : : DIY & Tools

John Guest & Whale Push Fit Plumbing – RV MEGA

Male Connector, Specialty, OD Tube Fittings

John Guest SpeedFit 1/2 in. Plastic Push-to-Connect Female Connector Fitting (5-Pack) PEI452034 - The Home Depot

Plumbing and Accessories Archives - Bespoke Aquariums

10mm x 15mm Speedfit Stem Elbow - PEM221015W - On-Demand Supplies

Tube and Fittings – WilliamsWarn

SuperSeal Barb Connector, OD Tube Fitting

Draft Beer Fittings and Connectors for Your Kegerator or Beer Tower —

John Guest Push-In Fitting – 1/2 in. Stem x 3/8 in. Barb – F.H. Steinbart Company

John Guest 3/8 in. x 1/2 in. Push-to-Connect Tube to Hose Stem Fitting (10-Pack) PP251216W - The Home Depot