Amazon.com : Aupoko 1LB Portable Propane Tank Cansiter Regulator Adapter Connection to 3/8" Male Flare (5/8"-18UNF) Thread, Camping Grill Stove Parts for Heaters, Burner, Cooker : Patio, Lawn & Garden
Draft Beer Nitrogen Regulator To Co2 Tank Adapter - Krome Dispense
3/8 to CGA320 Regulator Adapter, Aluminum CO2 Regulator Cylinder Adapter Pneumatics Connector Fitting Tank Converter Accessories for Homebrew Beer Aquarium
Regulator Adapter for 221L Calibration Gas Cylinder (71-221L)
Oxygen Tank Regulator Adapters for British and European Tanks