Rubber Coupling Pipe to Tubular 2" x 1 1/2" | AF Supply
Amazon.com: 4 inch to 2-1/2 inch Reducer with 4 inch Flexible Cuff Rubber Coupler Fitting and Stainless Steel Hose Clamps for Dust Collection on Machinery and Workshop Vacuums : Tools & Home Improvement
Fernco 1056-215 Reducing 2-in. x 1-1/2-in. Flexible PVC Pipe Coupling for Cast Iron and Plastic Plumbing Connections in Gray - Amazon.com
Fernco 2 in. x 1-1/2 in. DWV Flexible PVC Coupling P1056-215 - The Home Depot
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Supply Giant 6I47 Flexible PVC Coupling With Stainless Steel Clamps, 2", Black - Amazon.com
Fernco 1-1/2" Cast Iron/Plastic/Steel/Copper/Lead Flexible Coupling at Menards®
2 in. x 1-1/4 in. PVC Flexible Reducing Coupling with Stainless Steel clamps - Walmart.com