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Fitvell Stainless Steel Pipe Fitting Shower Arm Extension 40mm Length G 1/2 Male to G 1/2 Female BSP Thread Shower Head Extender (pack of 2) - Amazon.com
304 Stainless Steel 1/2" BSPT Male x Male Thread Extension Fitting 40mm 50 60 70 80 90 100 150 20cm Butt Joint Plumbing Fittings - AliExpress
Uxcell 2-Way 40mm L 202 Stainless Steel Rail Pipe Fitting Brushed for 25mm/1" OD 2Pack - Walmart.com
Bettomshin 2Pcs 1Inch Flange Sanitary Pipe Fitting Female Threaded Stainless Steel 304 Hexagon KF25 Adapter Female PT to Tri Clamp OD 40mm/1.57''Ferrule for Threaded Pipe Connectors - Amazon.com
Beduan Shower Head Extension Tube Pipe Fittings, G 1/2 Male to G 1/2 Female BSP threaded Stainless Steel Round Shower Arm Extension Cast Fitting Coupler (50mm Length,Pack of 2) - Amazon.com