Amazon.com: FangKingNo5pcs 1.5Inch White PVC Pipe Coupling Adapter Pipe Fittings couplers (Slip to Slip) Schedule 40 Easy to Install,and High Tensile for Home or Industrial Use (Pack of 5) (1 1/2") :
3000-55 - Fernco 3000-55 - 5" x 5" ProFlex Coupling (Cast Iron to PVC, Steel, Extra-Heavy Cast Iron)