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1 inch Commercial Quality 1'' Expansion Coupling Pipe Plug with Steel and Nylon Wing Handle # 06 (1) - - Amazon.com
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Amazon.com: Black Nylon Hole Plugs Fits 1 1/8" Diameter Hole - Slightly Domed Surface - Durable Nylon Plug Snaps Into Hole with Locking Tabs That Hold in Place (12) : Industrial & Scientific
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