1 1/2" PVC Coupling (slip x slip) — BascomMaple.com
Fernco 1-1/2-in Schedule 40 PVC Coupling in the PVC Pipe & Fittings department at Lowes.com
Canplas 193022 PVC DWV Reducing Coupling, 2 x 1-1/2-Inch, White - Pipe Fittings - Amazon.com
Fernco - 1-1/2 x 1-1/4″ PVC Flexible Pipe Coupling with Clamp - 82978644 - MSC Industrial Supply
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
Value Collection - 2 x 1-1/2″ PVC Pipe Reducing Coupling - 51240984 - MSC Industrial Supply
Carlon PVC 2-1/2 In. Socket Conduit Coupling - Roush Hardware
Charlotte Pipe 1-1/2-in x 2-in PVC DWV Adapter Coupling in the PVC DWV Pipe & Fittings department at Lowes.com