matchmaker Viva Cosmic copper to cast iron coupling Assault Not complicated ability
The Plumber's Choice Shielded 1-1/2 in. Transition Coupling Connects Cast Iron, Plastic, or Steel to 1-1/2 in. Copper or 1-1/4 in. Plastic H-38337 - The Home Depot
The Plumber's Choice Shielded 3 in. Cast Iron Transition Coupling Connects to Copper H-38555 - The Home Depot
1-1/2" Cast Iron or Plastic or Steel to 1-1/2" Copper Band-Seal Specialty Coupling - FaucetDepot.com
Amazon.com: Fernco PROFLEX P3001-22 Shielded Pipe Coupling for Cast Iron, Plastic, or Steel to Copper Plumbing Connections : Industrial & Scientific