LTWFITTING 90 Degree Elbow Stainless Steel 316 Barb Fitting 1/4-Inch ID Hose x 1/8-Inch Male NPT Air Gas (Pack of 5): Amazon.com: Industrial & Scientific
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Amazon.com: Quickun 304 Stainless Steel Hose Barb Fitting Elbow, 3/8" Barb x 3/8" Male 90 Degree Barbed Pipe Fitting for Water/Fuel/Air : Automotive
Hose Barb 90 Degree, 1/2" Male NPT x 1/2" Hose ID
Amazon.com: Joywayus 3/4" Hose Barb x 1/2" NPT Male Home Brew Pipe Fitting Stainless Steel 90 Degree Elbow Adapter : Industrial & Scientific