1/4 Male NPT x 3/8 Inch Hose Barb Brass Adapter Fitting (BAF-1)
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SING F LTD 2 Pcs 3/8inch/10mm Brass Barbed Hose Fitting Coupler Connector with 1/4 Inch Male BSP Thread Pipe Nipple Fitting for Air Water Fuel Oil Gas: Amazon.com: Industrial & Scientific
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Dixon BF88 Brass Hose Fitting, Solid Nipple, 1" NPTF Female x 1" Hose ID Barbed: Amazon.com: Industrial & Scientific
BRASS WELDING HOSE CONNECTOR - LEFT HAND - FASTFITTINGS.COM