Rubber Coupling Pipe to Tubular 1 1/2" | AF Supply
Fusion Coupling 1-1/2" x 1-1/4" | Geo Hydro Supply in Ohio
1-1/2" x 1-1/4" ABS Reducing Coupling - PEXhouse.com
Fernco 1-1/2 x 1-1/4 Inch 4.3 Psi Flexible Pvc Clamp Reducer Coupling, Black | HD Supply
Amazon.com: Dust Collection Cone Reducer 4-Inch to 2 1/2-Inch plus 5 Vacuum Hose Adapters Fits 1 1/16 to 1 3/4 inches Includes Shop Vac Adapter 2 1/2 to 1 1/4 inch and 1 Rubber Reducer : Tools & Home Improvement
Keeney 1-1/2-in Plastic Reducer Coupling in the Under Sink Plumbing department at Lowes.com