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Smith-Blair Ductile Iron Pipe Coupling, Universal, Epoxy Coated Steel Bolt, 4 Bolts, 5" Length, 3" Pipe Size: Industrial Pipe Fittings: Amazon.com: Industrial & Scientific
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Fernco P1056-415 4-Inch to 1-1/2-Inch Flexible Reducing Coupling With Clamp - Hydraulic Couplings - Amazon.com
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