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Hillman 5-Pack 5/16-in x 3/8-in Threaded Coupling Adapter Fitting in the Brass Fittings department at Lowes.com
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EDGE INDUSTRIAL 3/8" X 5/16" Hose ID Brass Barb Reducer SPLICER Fitting Fuel / AIR / Water / Oil / Gas / WOG (Qty 1): Amazon.com: Industrial & Scientific
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Amazon.com: Beduan Brass Hose Barb Reducer, 3/8" to 5/16" Barb Hose ID, Reducing Barb Brabed Fitting Splicer Mender Union Air Water Fuel (Pack of 2) : Industrial & Scientific
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LTWFITTING 3/8 in. OD x 5/16 in. OD Flare Brass Reducing Coupling Fitting (5-Pack) HF42R6505 - The Home Depot
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LTWFITTING 5/16 in. O.D. Comp x 3/8 in. MIP Brass Compression Adapter Fitting (5-Pack) HF685605 - The Home Depot
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Amazon.com: LTWFITTING Brass 3/8" OD x 5/16" OD Flare Reducing Union,Brass Flare Tube Fitting(Pack of 5) : Industrial & Scientific
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Amazon.com: Brass Hose Barb Reducer, 3/8" to 5/16" Barb Hose ID, Reducing Barb Brabed Fittings Splicer Mender Union Air Gas Water Fuel Line Heater Garden Pond Poly Tubing Adapter (Pack of 2) :
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LTWFITTING 5/16 in. ID Hose Barb x 3/8 in. MIP Lead Free Brass Adapter Fitting (5-Pack) HFLF39185605 - The Home Depot
![Transmission Line Adapter - 3/8" Steel Compression to 5/16" Rubber – AGS Company Automotive Solutions Transmission Line Adapter - 3/8" Steel Compression to 5/16" Rubber – AGS Company Automotive Solutions](https://www.agscompany.com/cdn/shop/products/TR-410_500x.png?v=1650462920)