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2PCS Stainless Steel 304 Flange Hex Socket Plug Bung 3/8" NPT Male With Seal Rubber Ring, Hexagonal Water Pipe Fitting Plug Universal Fit

2PCS Stainless Steel 304 Flange Hex Socket Plug Bung 3/8" NPT Male With Seal Rubber Ring, Hexagonal Water Pipe Fitting Plug Universal Fit
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comments:

Illustrious-Top5939 posted on r/ryobi2w

Amazon has stainless steel ones. I wonder if that would work. I don’t know what size would be correct. https://a.co/d/0d1IXU1b