FasParts 1/8" Female NPT FPT FIP to 1/16" Male MPT MIP Brass Pipe Adaptor Fitting Fuel/Air/Water/Boat/Gas/Oil WOG - - Amazon.com
Amazon.com: Stainless Steel Internal Hex Countersunk Male Thread Pipe Plug Connector, 1/2" NPT Male (pack of 2) : Industrial & Scientific
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Fuel cock joint thread reducer 1/4''-1/8'' NPT
Amazon.com: 1/8'' 1/4'' 3/8'' 1/2'' 3/4'' NPT Plug Set Pipe Plug Assortment Kit Carbon Steel Male Thread Allen Head Socket Pipe Plug Fitting Set 63Pcs : Industrial & Scientific
Toolsland 10 Pack Male Air Coupler, 1/4-Inch NPT Thread Quick Connect Air Tool Fittings, Industrial M Style Coupler with Brass Finish for Quickly and Safely Disconnect Air Hose - - Amazon.com
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Hooshing 2PCS Brass Pipe Fitting Reducer Adapter 3/8" NPT Female x 1/4" NPT Male Reducing Adapter - - Amazon.com
Amazon.com: SANATO Stainless Steel 304 Forging Hex Bushing, 3/4" NPT Male x 1/4" NPT Female Pipe Fittings, Heavy Duty Hose Adapter Convert ( Pack of 3) : Industrial & Scientific