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Fernco 1-1/4 in. x 1-1/4 in. Flexible PVC Coupling P1056-125 - The Home Depot
Fernco 1056-150/125 Reducing 1-1/2-in. x 1-1/4-in. Flexible PVC Pipe Coupling for Cast Iron and Plastic Plumbing Connections in Black - Hydraulic Couplings - Amazon.com
Fernco 1-1/4 in. to 1-1/2 in. Flexible PVC Tubular Drain Fittings & Connectors PTC-150 - The Home Depot
Fernco 1056-150 1-1/2" Flexible PVC Pipe Coupling for Cast Iron and Plastic Plumbing Connections, White - Walmart.com