NO LOGO WSF-Adapters, 1pc Brass Fitting 16mm Hose Barb to 19mm 25mm 32mm OD Hose Gas Coupler Connector Raccord Barb Reducer Copper Pipe Air Tube Adapter (Size : 16mm x 25mm) :
6-32MM Barb Hose Brass Fitting Splicer Mender Union Reducer Air Boat Gas Fuel | eBay