Mr. Heater Propane Bulk Cylinder Adapter with Appliance End Fitting and Acme Nut at Tractor Supply Co.
Amazon.com: 6 Pieces 1/4 Inch Male NPT x 1/4 Inch Female Inverted Flare Propane Fitting NPT Reducer Brass Female NPT Pipe Adapter Brass Bushing Reducer Brass Threaded Pipe Connector for Fuel, Oil
QCC1 Nut Propane Gas Fitting Hose Adapter with 1/4" Male Pipe Thread Propane Quick Connect Fittings Solid Brass Propane Adapter - Walmart.com
Gupbes Propane Tank Brass Fittings,Propane Tank Adapter Fitting,Propane Tank Brass Fittings Adapter Converts LP TANK POL Service Valve to QCC1 Type1 Hose - Walmart.com