Filler Neck Supply Co Fuel Fill Hose ID Reducer B01
HPS High Temp 2" > 3.25" ID x 3" Long 4-ply Reinforced Silicone Reducer Coupler Hose Black (51mm > 83mm ID x 76mm Length) - Walmart.com
Drain Coupling, 4 to 2 in. Straight Adaptor, PVC Rubber
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 1-1/2-in Schedule 40 PVC Compression Coupling in the PVC Pipe & Fittings department at Lowes.com
Amazon.com: Flexible PVC Rubber Coupling with Stainless Steel Clamps 4 x 2 Inch, Black : Industrial & Scientific
Flexible Couplings and Adapters | Fernco - US
Fernco 4 in. x 2 in. DWV Flexible PVC Coupling P1056-42 - The Home Depot
Amazon.com: 4 inch to 2-1/2 inch Reducer with 4 inch Flexible Cuff Rubber Coupler Fitting and Stainless Steel Hose Clamps with Turn Key Thumb Screw to Easily Tighten and Loosen • Designed