PVC 4" x 4" Flexible Coupling & Shear Ring (Clay x CI/Plastic) - The Drainage Products Store
Amazon.com: Supply Giant 6I44x2 Flexible Pvc Coupling with Stainless Steel Clamps for pipe size 1 inch Black (pack of 2) Inner Diameter 1.3 Inches : Everything Else
PROFLEX 3-in. Shielded Specialty Coupling for Sewer, Drain, Waste and Vent Piping - Rustproof Stainless Steel Clamps - IAPMO Safety Listed in the PVC Pipe & Fittings department at Lowes.com
Fernco 3-in. Shielded Specialty Coupling for Sewer, Drain, Waste, and Vent Piping - Quick and Easy Connection - Rustproof Stainless Steel Clamps in the PVC Pipe & Fittings department at Lowes.com
Fernco 1056-150 1-1/2-in. Flexible PVC Pipe Coupling for Cast Iron and Plastic Plumbing Connections in Brown - Amazon.com
The Plumber's Choice Shielded 3 in. Steel Transition Coupling Connects Plastic or Extra Heavy Cast Iron H-38255 - The Home Depot