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4pcs/lot 1/4 3/8 1/2 Drive Socket Adapter Converter Reducer Air Impact Socket Wrench Adapter Hand Tools Set - Wrench - AliExpress
PARKER Reducing Adapter: 316 Stainless Steel, 3/8 in x 1/4 in Fitting Pipe Size, Female NPT x Male NPT - 1DFY1|6-4 RA-SS - Grainger
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Amazon.com: Midanya 1/4-Inch Female Pipe x 3/8-Inch Male Brass Pipe Fitting Reducer Adapter Air Hose Adapter Metal Pipe Adapter, 2 Pieces (1 Pair) : Everything Else
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Amazon.co.jp: 1/4 '3/8'1/2' Male Thread Stainless Steel Pipe Fitting Nipple Connector Adapter with Barb 8mm 10mm Hose Barb, 1/2", 8mm : DIY, Tools & Garden
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